{
    "model": {
        "rank": 5977,
        "code": "thing-q407541",
        "model_id": "vr.tr.fentanyl",
        "name": "fentanyl",
        "purpose": "Enable an AI agent to recognise fentanyl, assess the identity and condition of fentanyl-bearing material, and determine which evidence and authorisations are required before handling or use.",
        "family": "Thing Registry",
        "category": "Physical world and living systems",
        "status": "research-draft",
        "kind": "thing",
        "plane": "PHY",
        "domain": "PHY.MAT",
        "industry": "",
        "version": "",
        "url": "/models/thing/q407541/",
        "tier": 2,
        "score": 63,
        "payload": {
            "layer": "wikidata",
            "aliases": [],
            "aliasCount": 0,
            "merged": 0,
            "knownIn": 63,
            "facets": null,
            "markers": [],
            "lexicalClass": "",
            "senseRank": null,
            "alsoRegisteredAs": null,
            "source": {
                "dataset": "wikidata",
                "item": "Q407541",
                "url": "https://www.wikidata.org/wiki/Q407541",
                "license": "CC0 1.0"
            }
        },
        "research": {
            "vercy": "1.0-draft",
            "publication": {
                "status": "research-draft",
                "adjudicationStatus": "unreviewed",
                "publishableCanonical": false,
                "generatedAt": "2026-09-07T10:28:29Z",
                "providers": [
                    "Codex",
                    "Grok"
                ],
                "missingProviders": [],
                "pass": 2,
                "cost": {
                    "grok": {
                        "usd": 0.00972162,
                        "turns": 1,
                        "seconds": 159.4,
                        "error": null
                    },
                    "codex": {
                        "seconds": 88.1,
                        "error": "Reading additional input from stdin...\nOpenAI Codex v0.153.3\n--------\nworkdir: R:\\02_PROJECTS\\02_Meta_Models_Platforms\\Ver.cy\\current\\thing-registry-backlog\nmodel: gpt-6-astra\nprovider: openai\napproval: never\nsandbox: read-only\nreasoning effort: none\nreasoning summaries: none\nsession id: 01a07b65-4cb8-7db2-a479-aa7ea6ae807c\n--------\nuser\nYou are drafting a Vercy meta-model for one registered thing. Answer as JSON only, no prose around it.\n\nThing: fentanyl\nRegistry id: vr.tr.fentanyl\nPlane / domain: PHY / PHY.MAT\nRegistry definition: (none recorded)\nNames folded into this entry: (none)\n\nA Vercy"
                    }
                }
            },
            "metaModel": {
                "id": "THING-Q407541",
                "registryId": "vr.tr.fentanyl",
                "name": "fentanyl",
                "version": "0.1.0-research.1",
                "entryKind": "thing",
                "family": "Thing Registry",
                "domain": [
                    "PHY.MAT"
                ],
                "status": "research-draft"
            },
            "canonicalUrl": "https://ver.cy/models/thing/q407541/",
            "model": {
                "registry_id": "vr.tr.fentanyl",
                "name": "fentanyl",
                "purpose": "Enable an AI agent to recognise fentanyl, assess the identity and condition of fentanyl-bearing material, and determine which evidence and authorisations are required before handling or use.",
                "definition": "Fentanyl is a synthetic 4-anilidopiperidine µ-opioid receptor agonist used clinically as a high-potency analgesic and anaesthetic and, as illicitly manufactured powder or counterfeit tablets, as a principal opioid in much of the North American illegal supply.",
                "scope_statement": "This model owns the substance-level identity of fentanyl under vr.tr.fentanyl in PHY / PHY.MAT and the evidence needed to characterise its presence, quantity, presentation, condition and permitted handling in a particular material; products, people and activities are linked neighbouring entities.",
                "in_scope": [
                    "Fentanyl identity, explicitly distinguishing the parent substance, salt form and related compounds.",
                    "Evidence of fentanyl presence or absence in a specified sample, including analytical limitations.",
                    "Fentanyl quantity, concentration and distribution within material, with an explicit reporting basis.",
                    "Material presentation, integrity, storage history and residual fentanyl.",
                    "Provenance, exposure-relevant properties and context-specific restrictions on handling."
                ],
                "out_of_scope": [
                    "Independent models of fentanyl analogues, precursors and metabolites.",
                    "Complete pharmaceutical product, packaging and delivery-device specifications.",
                    "Patient diagnosis, opioid tolerance assessment, prescribing and dose selection.",
                    "Overdose diagnosis, emergency treatment and substance use disorder care.",
                    "Chemical synthesis procedures and manufacturing process design.",
                    "Organisation-wide controlled-substance compliance and criminal investigations."
                ],
                "distinguishing_features": [
                    "Require identity evidence that distinguishes fentanyl itself from related compounds; a report using the collective term fentanyls does not establish the parent substance.",
                    "Record whether an identifier and reported mass describe fentanyl base, a salt or fentanyl-equivalent content before comparing materials.",
                    "Distinguish a fentanyl-specific result from a generic opiate screen: widely used class screens may omit fentanyl. [CDC toxicology guidance](https://www.cdc.gov/overdose-prevention/hcp/training-modules/guideline/page1323207.html)",
                    "Distinguish chemical identity from product authenticity: fentanyl can occur in pharmaceutical products and counterfeit pills, so appearance alone does not establish either identity or origin. [DEA fentanyl factsheet](https://www.dea.gov/factsheets/fentanyl)",
                    "For a transdermal presentation, distinguish total fentanyl content from labelled delivery rate; a rate in micrograms per hour is not a measurement of total material content. [DailyMed fentanyl system label](https://dailymed.nlm.nih.gov/dailymed/drugInfo.cfm?setid=242759ef-cb6d-4e3e-9f8d-5e31efa1f289)"
                ],
                "characteristics": [
                    {
                        "name": "Identity evidence state",
                        "kind": "state",
                        "unit_or_values": "claimed | presumptive | confirmed within method scope | inconclusive | not detected within method limits",
                        "why_it_matters": "Prevents an allegation or screening result from becoming an unqualified identity claim."
                    },
                    {
                        "name": "Chemical form",
                        "kind": "category",
                        "unit_or_values": "base | specified salt | unresolved; associated identifier and reporting basis",
                        "why_it_matters": "Controls interpretation of substance identifiers and quantity comparisons."
                    },
                    {
                        "name": "Material presentation",
                        "kind": "category",
                        "unit_or_values": "bulk substance | solution | solid mixture | transdermal system | other specified formulation | residue | unknown",
                        "why_it_matters": "Determines which sampling, integrity and exposure questions apply."
                    },
                    {
                        "name": "Fentanyl amount",
                        "kind": "measurement",
                        "unit_or_values": "micrograms or milligrams per explicitly identified sample or item; fentanyl-equivalent or specified salt basis",
                        "why_it_matters": "Separates the amount of fentanyl from the total mass of its carrier material."
                    },
                    {
                        "name": "Fentanyl concentration",
                        "kind": "measurement",
                        "unit_or_values": "micrograms/mL, milligrams/g or mass fraction; matrix, uncertainty and analytical method required",
                        "why_it_matters": "Supports comparison without conflating liquid concentration, solid composition and item content."
                    },
                    {
                        "name": "Labelled delivery rate",
                        "kind": "measurement",
                        "unit_or_values": "micrograms/hour for an applicable delivery product; otherwise not applicable or unknown",
                        "why_it_matters": "Keeps product release claims separate from measured quantity and actual exposure."
                    },
                    {
                        "name": "Sampling coverage",
                        "kind": "relation",
                        "unit_or_values": "tested portion linked to parent item or lot, sampling locations and representativeness evidence",
                        "why_it_matters": "Limits how far a result can be applied to untested material."
                    },
                    {
                        "name": "Co-constituent evidence",
                        "kind": "relation",
                        "unit_or_values": "identified substances linked to results; untested constituents explicitly unresolved",
                        "why_it_matters": "Fentanyl detection alone does not characterise a mixture."
                    },
                    {
                        "name": "Material condition",
                        "kind": "state",
                        "unit_or_values": "integrity, expiry assessment, storage excursions, contamination and used or unused status recorded separately",
                        "why_it_matters": "Determines whether labelled properties and handling assumptions remain applicable."
                    },
                    {
                        "name": "Origin and authenticity",
                        "kind": "state",
                        "unit_or_values": "documented pharmaceutical origin | documented other origin | suspected counterfeit or diverted | unresolved",
                        "why_it_matters": "Separates evidence about origin from chemistry and possession status."
                    },
                    {
                        "name": "Action authorisation",
                        "kind": "relation",
                        "unit_or_values": "material linked to actor, proposed action, jurisdiction, date and applicable authority",
                        "why_it_matters": "Permission depends on context rather than on a universal substance-level flag."
                    }
                ],
                "affordances": [
                    "Classify a material as suspected, analytically supported or unresolved fentanyl-bearing material.",
                    "Request qualified analysis and constrain conclusions to the method and tested portion.",
                    "Reconcile fentanyl quantities while preserving chemical-form, unit and denominator distinctions.",
                    "Flag material for containment, quarantine or specialist review when identity, integrity or handling conditions are unresolved.",
                    "Check whether a proposed transfer, storage, clinical handoff or disposal has the necessary evidence and authorisation.",
                    "Link a suspected exposure to the appropriate emergency or clinical workflow."
                ]
            },
            "sources": [
                {
                    "id": "dea-fentanyl-factsheet",
                    "title": "Drug Fact Sheet: Fentanyl",
                    "url": "https://www.dea.gov/factsheets/fentanyl",
                    "what_it_supports": "Illicit supply form, Schedule II status, commonly cited 2 mg lethal-dose figure, street names, and analogue/counterfeit-tablet practice.",
                    "url_status": "blocked"
                },
                {
                    "id": "pubchem-3345",
                    "title": "PubChem Compound Summary for CID 3345, Fentanyl",
                    "url": "https://pubchem.ncbi.nlm.nih.gov/compound/Fentanyl",
                    "what_it_supports": "Chemical identity (formula, CAS, InChIKey, UNII), pharmacological class, and identifier crosswalk.",
                    "url_status": "live"
                },
                {
                    "id": "cdc-niosh-fentanyl",
                    "title": "Fentanyl: Preventing Occupational Exposure to Emergency Responders",
                    "url": "",
                    "what_it_supports": "Occupational exposure guidance, routes of concern for first responders, and the distinction between incidental dermal contact and inhalation/ingestion risk.",
                    "url_status": "dead"
                },
                {
                    "id": "who-eml",
                    "title": "WHO Model List of Essential Medicines",
                    "url": "https://www.who.int/groups/expert-committee-on-selection-and-use-of-essential-medicines/essential-medicines-lists",
                    "what_it_supports": "Legitimate medical status of fentanyl as an essential anaesthetic and palliative-care opioid.",
                    "url_status": "live"
                },
                {
                    "id": "un-1961",
                    "title": "Single Convention on Narcotic Drugs, 1961",
                    "url": "",
                    "what_it_supports": "International narcotic control: fentanyl is listed in Schedule I of the Convention, which UN member states implement in domestic law."
                },
                {
                    "id": "fda-duragesic-pi",
                    "title": "DURAGESIC (fentanyl transdermal system) prescribing information",
                    "url": "",
                    "what_it_supports": "Licensed transdermal strengths and rates, heat-related absorption increase, paediatric accidental-exposure hazard, respiratory depression, and other labelled risks."
                }
            ],
            "structure": {
                "bundles": [
                    {
                        "id": "fentanyl-identity",
                        "name": "Fentanyl identity",
                        "description": "Establish what the fentanyl designation refers to and how strongly the material supports that designation.",
                        "rationale": "Fentanyl, its salts, related compounds and fentanyl-bearing products must not become interchangeable identities.",
                        "layers": [
                            {
                                "id": "substance-boundary",
                                "name": "Substance boundary",
                                "description": "Define the parent-substance identity and its relationship to named chemical forms.",
                                "findings": [
                                    {
                                        "id": "parent-and-form",
                                        "name": "Parent substance and chemical form",
                                        "description": "Record the asserted identity, form-specific identifiers and relations to separately modelled compounds.",
                                        "questions": [
                                            {
                                                "text": "Does this record denote fentanyl itself, a specified salt, or a material containing fentanyl?",
                                                "kind": "definition",
                                                "id": "parent-and-form-q01"
                                            },
                                            {
                                                "text": "Which identity evidence excludes an analogue, precursor or metabolite being mistaken for fentanyl?",
                                                "kind": "boundary",
                                                "id": "parent-and-form-q02"
                                            }
                                        ]
                                    }
                                ]
                            },
                            {
                                "id": "analytical-recognition",
                                "name": "Analytical recognition",
                                "description": "Attach identity conclusions to the methods and specimens that support them.",
                                "findings": [
                                    {
                                        "id": "identity-result-limits",
                                        "name": "Identity result and limits",
                                        "description": "Preserve the distinction between claimed identity, screening evidence and confirmatory identification.",
                                        "questions": [
                                            {
                                                "text": "Which specimen, method, laboratory or operator, date and original report support the result?",
                                                "kind": "provenance",
                                                "id": "identity-result-limits-q01"
                                            },
                                            {
                                                "text": "What detection limits, cross-reactivity and compound coverage constrain a positive or negative conclusion?",
                                                "kind": "measurement",
                                                "id": "identity-result-limits-q02"
                                            }
                                        ]
                                    }
                                ]
                            }
                        ]
                    },
                    {
                        "id": "fentanyl-content",
                        "name": "Fentanyl content",
                        "description": "Describe how much fentanyl is present and how far the measurement can be generalised.",
                        "rationale": "Presence, concentration, item content and delivery rate answer different questions.",
                        "layers": [
                            {
                                "id": "quantity-basis",
                                "name": "Quantity basis",
                                "description": "Make each fentanyl quantity interpretable without implicit conversions.",
                                "findings": [
                                    {
                                        "id": "content-and-rate",
                                        "name": "Content, concentration and rate",
                                        "description": "Keep measured content, label claims and delivery specifications distinct.",
                                        "questions": [
                                            {
                                                "text": "What fentanyl amount or concentration was measured, with which units, uncertainty and base-or-salt basis?",
                                                "kind": "measurement",
                                                "id": "content-and-rate-q01"
                                            },
                                            {
                                                "text": "Does the reported number describe total content, concentration, labelled release rate or an independently recorded administration event?",
                                                "kind": "boundary",
                                                "id": "content-and-rate-q02"
                                            }
                                        ]
                                    }
                                ]
                            },
                            {
                                "id": "mixture-and-sampling",
                                "name": "Mixture and sampling",
                                "description": "Represent the carrier matrix, other constituents and the coverage of testing.",
                                "findings": [
                                    {
                                        "id": "representative-composition",
                                        "name": "Composition and representativeness",
                                        "description": "Prevent a result from one portion from becoming an unsupported claim about an entire item or lot.",
                                        "questions": [
                                            {
                                                "text": "Which matrix and co-constituents were characterised, and which remain untested?",
                                                "kind": "measurement",
                                                "id": "representative-composition-q01"
                                            },
                                            {
                                                "text": "What sampling evidence supports applying this fentanyl result to other portions, items or the lot?",
                                                "kind": "boundary",
                                                "id": "representative-composition-q02"
                                            }
                                        ]
                                    }
                                ]
                            }
                        ]
                    },
                    {
                        "id": "presentation-and-condition",
                        "name": "Presentation and condition",
                        "description": "Record the physical context that affects containment, release and continued reliance on product claims.",
                        "rationale": "Bulk material, a solution and a transdermal system require different state assessments.",
                        "layers": [
                            {
                                "id": "formulation-interface",
                                "name": "Formulation interface",
                                "description": "Link fentanyl-bearing material to its formulation and any delivery system.",
                                "findings": [
                                    {
                                        "id": "presentation-specific-properties",
                                        "name": "Presentation-specific properties",
                                        "description": "Capture relevant formulation claims while leaving complete product design to the product model.",
                                        "questions": [
                                            {
                                                "text": "What physical presentation contains the fentanyl, and which authenticated product record, if any, describes it?",
                                                "kind": "definition",
                                                "id": "presentation-specific-properties-q01"
                                            },
                                            {
                                                "text": "Which release, route or sterility claims apply to this exact presentation, and what supports them?",
                                                "kind": "provenance",
                                                "id": "presentation-specific-properties-q02"
                                            }
                                        ]
                                    }
                                ]
                            },
                            {
                                "id": "integrity-and-residue",
                                "name": "Integrity and residue",
                                "description": "Assess changes that affect exposure or suitability, including material remaining after use.",
                                "findings": [
                                    {
                                        "id": "condition-dependent-release",
                                        "name": "Condition-dependent release and remaining material",
                                        "description": "Record damage, storage excursions and residual content; heat exposure is specifically relevant to fentanyl transdermal systems. [DailyMed fentanyl system label](https://dailymed.nlm.nih.gov/dailymed/drugInfo.cfm?setid=242759ef-cb6d-4e3e-9f8d-5e31efa1f289)",
                                        "questions": [
                                            {
                                                "text": "What evidence records packaging integrity, expiry, leakage, damage or storage excursions, including heat where applicable?",
                                                "kind": "provenance",
                                                "id": "condition-dependent-release-q01"
                                            },
                                            {
                                                "text": "After use or a condition change, what supports an assessment of remaining fentanyl and the need for quarantine or disposal?",
                                                "kind": "action",
                                                "id": "condition-dependent-release-q02"
                                            }
                                        ]
                                    }
                                ]
                            }
                        ]
                    },
                    {
                        "id": "exposure-and-use-boundaries",
                        "name": "Exposure and use boundaries",
                        "description": "Connect material properties to exposure assessment and qualified decisions about use.",
                        "rationale": "Recognising fentanyl does not establish the severity of a particular exposure or suitability for a patient.",
                        "layers": [
                            {
                                "id": "exposure-context",
                                "name": "Exposure context",
                                "description": "Describe a plausible or observed exposure without treating substance presence as proof of absorbed dose.",
                                "findings": [
                                    {
                                        "id": "material-to-exposure",
                                        "name": "Material-to-exposure relationship",
                                        "description": "Separate material evidence, contact circumstances and clinical observations.",
                                        "questions": [
                                            {
                                                "text": "What route, physical form, containment breach and timing are documented for the possible exposure?",
                                                "kind": "provenance",
                                                "id": "material-to-exposure-q01"
                                            },
                                            {
                                                "text": "What observations require an emergency or clinical handoff, and which conclusions remain outside this material model?",
                                                "kind": "action",
                                                "id": "material-to-exposure-q02"
                                            }
                                        ]
                                    }
                                ]
                            },
                            {
                                "id": "clinical-use-interface",
                                "name": "Clinical use interface",
                                "description": "Identify prerequisites for referring a pharmaceutical presentation into a prescribing or administration workflow.",
                                "findings": [
                                    {
                                        "id": "use-prerequisites",
                                        "name": "Product-specific use prerequisites",
                                        "description": "Require the relevant product and clinical records before a use decision; do not infer substitutability from shared fentanyl content.",
                                        "questions": [
                                            {
                                                "text": "Which authenticated product instructions and authorised clinical decision govern the proposed use?",
                                                "kind": "provenance",
                                                "id": "use-prerequisites-q01"
                                            },
                                            {
                                                "text": "Which patient-specific eligibility, interaction and monitoring assessments must be resolved by the linked clinical workflow?",
                                                "kind": "boundary",
                                                "id": "use-prerequisites-q02"
                                            }
                                        ]
                                    }
                                ]
                            }
                        ]
                    },
                    {
                        "id": "origin-and-controlled-disposition",
                        "name": "Origin and controlled disposition",
                        "description": "Establish material provenance and the basis for a particular handling or disposition decision.",
                        "rationale": "Chemical identity does not establish pharmaceutical authenticity, lawful custody or permission to transfer.",
                        "layers": [
                            {
                                "id": "origin-and-custody",
                                "name": "Origin and custody",
                                "description": "Separate verified supply history from packaging claims and suspected diversion.",
                                "findings": [
                                    {
                                        "id": "authenticity-and-traceability",
                                        "name": "Authenticity and traceability",
                                        "description": "Link origin claims to supplier, lot and custody evidence while preserving unresolved discrepancies.",
                                        "questions": [
                                            {
                                                "text": "Which supplier, manufacturer, lot and custody records substantiate the claimed origin?",
                                                "kind": "provenance",
                                                "id": "authenticity-and-traceability-q01"
                                            },
                                            {
                                                "text": "What evidence distinguishes authenticated pharmaceutical material, suspected counterfeit material, diversion and unknown origin?",
                                                "kind": "boundary",
                                                "id": "authenticity-and-traceability-q02"
                                            }
                                        ]
                                    }
                                ]
                            },
                            {
                                "id": "permitted-disposition",
                                "name": "Permitted disposition",
                                "description": "Evaluate a named action against current authority and material-specific conditions.",
                                "findings": [
                                    {
                                        "id": "action-specific-authority",
                                        "name": "Action-specific authority",
                                        "description": "Record the basis for storage, testing, transfer, return or disposal rather than assigning blanket permission.",
                                        "questions": [
                                            {
                                                "text": "Which jurisdiction, effective date, actor credentials and applicable authority govern the proposed action?",
                                                "kind": "provenance",
                                                "id": "action-specific-authority-q01"
                                            },
                                            {
                                                "text": "What material-specific containment, custody and disposal requirements must be satisfied, and what evidence records completion?",
                                                "kind": "action",
                                                "id": "action-specific-authority-q02"
                                            }
                                        ]
                                    }
                                ]
                            }
                        ]
                    },
                    {
                        "id": "evidence-and-external-alignment",
                        "name": "Evidence and external alignment",
                        "description": "What the world already says about this thing, gathered so the model can be checked against it.",
                        "rationale": "A model that cannot be lined up against existing standards, identifiers and practice cannot be adopted by anyone who already uses them.",
                        "layers": [
                            {
                                "id": "reported-evidence",
                                "name": "Reported evidence",
                                "description": "Findings from the breadth pass, kept separate from the structural claims.",
                                "findings": [
                                    {
                                        "id": "evidence-kinds",
                                        "name": "Kinds and varieties",
                                        "description": "Reported by the breadth pass; each item needs checking against its source before it becomes normative.",
                                        "evidence": [
                                            "Injectable pharmaceutical fentanyl citrate (peri-operative analgesia and anaesthesia)",
                                            "Transdermal therapeutic-system patches (chronic severe pain)",
                                            "Oral transmucosal products (lozenge, buccal tablet, sublingual tablet/film for breakthrough cancer pain)",
                                            "Intranasal pharmaceutical spray",
                                            "Illicitly manufactured fentanyl (IMF) as powder",
                                            "Counterfeit pressed tablets containing fentanyl (e.g. fake oxycodone \"M30\")",
                                            "Fentanyl analogues treated in forensic and scheduling practice as a class (acetylfentanyl, furanylfentanyl, carfentanil, and others)",
                                            "Veterinary injectable and transdermal preparations"
                                        ],
                                        "questions": [
                                            {
                                                "id": "evidence-kinds-q01",
                                                "text": "Which of these kinds and varieties hold for the sense of fentanyl this model covers, and on what evidence?",
                                                "kind": "provenance"
                                            }
                                        ]
                                    },
                                    {
                                        "id": "evidence-identifiers",
                                        "name": "Identifiers and schemes",
                                        "description": "Reported by the breadth pass; each item needs checking against its source before it becomes normative.",
                                        "evidence": [
                                            {
                                                "scheme": "Wikidata",
                                                "value_or_pattern": "Q407541",
                                                "note": "Item for the chemical substance fentanyl."
                                            },
                                            {
                                                "scheme": "CAS Registry Number",
                                                "value_or_pattern": "437-38-7",
                                                "note": "Fentanyl free base."
                                            },
                                            {
                                                "scheme": "CAS Registry Number",
                                                "value_or_pattern": "990-73-8",
                                                "note": "Fentanyl citrate, the usual pharmaceutical salt."
                                            },
                                            {
                                                "scheme": "UNII",
                                                "value_or_pattern": "UG90S8Z5YD",
                                                "note": "FDA substance identifier for fentanyl."
                                            },
                                            {
                                                "scheme": "UNII",
                                                "value_or_pattern": "MUN5QT37C2",
                                                "note": "Fentanyl citrate."
                                            },
                                            {
                                                "scheme": "ATC",
                                                "value_or_pattern": "N01AH01",
                                                "note": "Opioid anaesthetic."
                                            },
                                            {
                                                "scheme": "ATC",
                                                "value_or_pattern": "N02AB03",
                                                "note": "Phenylpiperidine analgesic."
                                            },
                                            {
                                                "scheme": "PubChem CID",
                                                "value_or_pattern": "3345",
                                                "note": "Compound record for fentanyl."
                                            },
                                            {
                                                "scheme": "InChIKey",
                                                "value_or_pattern": "PJMPHNIQZUBGLI-UHFFFAOYSA-N",
                                                "note": "Standard InChIKey for fentanyl."
                                            },
                                            {
                                                "scheme": "INN",
                                                "value_or_pattern": "fentanyl",
                                                "note": "WHO International Nonproprietary Name."
                                            },
                                            {
                                                "scheme": "DEA Controlled Substance Code Number",
                                                "value_or_pattern": "9801",
                                                "note": "U.S. CSA code for fentanyl; analogues have separate codes."
                                            }
                                        ],
                                        "questions": [
                                            {
                                                "id": "evidence-identifiers-q01",
                                                "text": "Which of these identifiers and schemes hold for the sense of fentanyl this model covers, and on what evidence?",
                                                "kind": "provenance"
                                            }
                                        ]
                                    },
                                    {
                                        "id": "evidence-standards-and-regulation",
                                        "name": "Standards and regulation",
                                        "description": "Reported by the breadth pass; each item needs checking against its source before it becomes normative.",
                                        "evidence": [
                                            "United Nations Single Convention on Narcotic Drugs, 1961, Schedule I - United Nations",
                                            "U.S. Controlled Substances Act, Schedule II (ACSCN 9801) - U.S. Drug Enforcement Administration",
                                            "Misuse of Drugs Act 1971, Class A - United Kingdom",
                                            "WHO Model List of Essential Medicines (anaesthesia and palliative care) - World Health Organization",
                                            "USP monograph Fentanyl Citrate - United States Pharmacopeia",
                                            "FDA approved product labeling for injectable, transdermal, transmucosal, and nasal fentanyl - U.S. Food and Drug Administration",
                                            "Class-wide control of fentanyl-related substances (2019) - China National Narcotics Control Commission",
                                            "NIOSH/CDC guidance on occupational exposure for emergency responders - U.S. National Institute for Occupational Safety and Health"
                                        ],
                                        "questions": [
                                            {
                                                "id": "evidence-standards-and-regulation-q01",
                                                "text": "Which of these standards and regulation hold for the sense of fentanyl this model covers, and on what evidence?",
                                                "kind": "provenance"
                                            }
                                        ]
                                    },
                                    {
                                        "id": "evidence-real-world-use",
                                        "name": "Real-world use",
                                        "description": "Reported by the breadth pass; each item needs checking against its source before it becomes normative.",
                                        "evidence": [
                                            "Intraoperative anaesthesia and immediate postoperative analgesia by intravenous bolus or infusion in hospitals.",
                                            "Transdermal patches prescribed for opioid-tolerant patients with chronic severe pain, including cancer pain.",
                                            "Oral transmucosal and nasal products for breakthrough cancer pain in opioid-tolerant patients.",
                                            "Veterinary peri-operative analgesia and anaesthesia.",
                                            "Illicit opioid markets: sold as powder, mixed into heroin or cocaine, or pressed into counterfeit oxycodone or benzodiazepine tablets.",
                                            "Harm-reduction drug checking with fentanyl immunoassay test strips.",
                                            "Emergency reversal of overdose with naloxone, often at higher or repeated doses than for heroin."
                                        ],
                                        "questions": [
                                            {
                                                "id": "evidence-real-world-use-q01",
                                                "text": "Which of these real-world use hold for the sense of fentanyl this model covers, and on what evidence?",
                                                "kind": "provenance"
                                            }
                                        ]
                                    },
                                    {
                                        "id": "evidence-measurements",
                                        "name": "Typical measurements",
                                        "description": "Reported by the breadth pass; each item needs checking against its source before it becomes normative.",
                                        "evidence": [
                                            {
                                                "quantity": "Typical adult IV analgesic bolus",
                                                "typical_range": "25-100",
                                                "unit": "µg"
                                            },
                                            {
                                                "quantity": "Commercial transdermal delivery rate",
                                                "typical_range": "12-100",
                                                "unit": "µg/h"
                                            },
                                            {
                                                "quantity": "Parenteral potency relative to morphine",
                                                "typical_range": "50-100",
                                                "unit": "fold (mass)"
                                            },
                                            {
                                                "quantity": "Publicly cited lethal dose in an opioid-naïve adult",
                                                "typical_range": "about 2 (highly variable with tolerance and co-intoxicants)",
                                                "unit": "mg"
                                            },
                                            {
                                                "quantity": "IV terminal elimination half-life",
                                                "typical_range": "3-12",
                                                "unit": "h"
                                            },
                                            {
                                                "quantity": "Molecular mass (free base)",
                                                "typical_range": "336.5",
                                                "unit": "g/mol"
                                            },
                                            {
                                                "quantity": "Plasma protein binding",
                                                "typical_range": "80-85",
                                                "unit": "%"
                                            },
                                            {
                                                "quantity": "Reported fentanyl content of counterfeit tablets",
                                                "typical_range": "highly variable; outbreak series often ~0.1-2",
                                                "unit": "mg per tablet"
                                            }
                                        ],
                                        "questions": [
                                            {
                                                "id": "evidence-measurements-q01",
                                                "text": "Which of these typical measurements hold for the sense of fentanyl this model covers, and on what evidence?",
                                                "kind": "provenance"
                                            }
                                        ]
                                    },
                                    {
                                        "id": "evidence-failure-modes-and-hazards",
                                        "name": "Failure modes and hazards",
                                        "description": "Reported by the breadth pass; each item needs checking against its source before it becomes normative.",
                                        "evidence": [
                                            "Dose-dependent respiratory depression and fatal apnoea, worsened by benzodiazepines, alcohol, xylazine, or other sedatives.",
                                            "Rapid intravenous injection can cause skeletal-muscle and chest-wall rigidity that prevents ventilation.",
                                            "Illicit dose is unknown to the user; a single counterfeit tablet can contain a lethal quantity.",
                                            "Transdermal absorption rises with heat (fever, heating pads, exertion), causing overdose from a labelled patch.",
                                            "Paediatric accidental exposure to discarded or unsecured patches.",
                                            "Misuse by extracting residual drug from used patches.",
                                            "Dependence, tolerance, and a severe withdrawal syndrome on cessation.",
                                            "Occupational hazard is primarily inadvertent inhalation or mucous-membrane contact with powder, not brief intact-skin contact; panic and poor scene practice have been documented alongside real contamination risk.",
                                            "Some analogues (notably carfentanil) are substantially more potent and may not be identified by routine immunoassay."
                                        ],
                                        "questions": [
                                            {
                                                "id": "evidence-failure-modes-and-hazards-q01",
                                                "text": "Which of these failure modes and hazards hold for the sense of fentanyl this model covers, and on what evidence?",
                                                "kind": "provenance"
                                            }
                                        ]
                                    },
                                    {
                                        "id": "evidence-regional-variation",
                                        "name": "Regional variation",
                                        "description": "Reported by the breadth pass; each item needs checking against its source before it becomes normative.",
                                        "evidence": [
                                            "United States and Canada: illicitly manufactured fentanyl, not diverted pharmaceutical product, has been the main driver of opioid-overdose deaths since the mid-2010s.",
                                            "Western and Southern Europe: heroin and diverted medicines still dominate many markets; IMF is present but generally a smaller share than in North America.",
                                            "Estonia and some neighbouring states had an earlier epidemic of 3-methylfentanyl.",
                                            "Mexico is a major trafficking and synthesis corridor into the United States; China scheduled fentanyl-related substances as a class in 2019 after earlier analogue export.",
                                            "Street names (Apache, China White, Dance Fever, \"blues\" for fake 30 mg oxycodone tablets, and many others) are North American law-enforcement usage and do not map cleanly to pharmaceutical nomenclature.",
                                            "Licensed transmucosal brand set and patch strengths differ by market (e.g. Actiq/Instanyl/Lazanda availability)."
                                        ],
                                        "questions": [
                                            {
                                                "id": "evidence-regional-variation-q01",
                                                "text": "Which of these regional variation hold for the sense of fentanyl this model covers, and on what evidence?",
                                                "kind": "provenance"
                                            }
                                        ]
                                    },
                                    {
                                        "id": "evidence-neighbours",
                                        "name": "Neighbouring kinds and how to tell them apart",
                                        "description": "Reported by the breadth pass; each item needs checking against its source before it becomes normative.",
                                        "evidence": [
                                            {
                                                "name": "Morphine",
                                                "difference": "Naturally derived phenanthrene opioid of much lower mass potency; separated by structure and by chromatographic retention/mass spectrum, not by a clinical µ-agonist effect."
                                            },
                                            {
                                                "name": "Diamorphine (heroin)",
                                                "difference": "Diacetylmorphine; GC-MS or LC-MS identification. Lateral-flow fentanyl strips detect fentanyl-class compounds and do not identify heroin."
                                            },
                                            {
                                                "name": "Oxycodone (including counterfeit \"M30\" tablets)",
                                                "difference": "Tablets may be visually identical to pharmaceutical oxycodone but contain fentanyl; only chemical testing (immunoassay strip plus confirmatory LC-MS) separates them."
                                            },
                                            {
                                                "name": "Sufentanil, alfentanil, remifentanil",
                                                "difference": "Closely related 4-anilidopiperidines used in anaesthesia; distinguished by potency, onset/offset, and targeted LC-MS, not by class immunoassay alone."
                                            },
                                            {
                                                "name": "Carfentanil",
                                                "difference": "Fentanyl analogue on the order of 100 times more potent by mass, historically a veterinary immobiliser; requires targeted mass spectrometry because many clinical fentanyl immunoassays are unvalidated for it."
                                            },
                                            {
                                                "name": "Nitazenes (e.g. isotonitazene)",
                                                "difference": "Benzimidazole opioids, not 4-anilidopiperidines; many fentanyl test strips do not cross-react, so a negative strip does not rule them out."
                                            },
                                            {
                                                "name": "Xylazine",
                                                "difference": "Veterinary α2-agonist co-adulterant in some IMF supplies; not an opioid and not reversed by naloxone; identified by a separate assay."
                                            }
                                        ],
                                        "questions": [
                                            {
                                                "id": "evidence-neighbours-q01",
                                                "text": "Which of these neighbouring kinds and how to tell them apart hold for the sense of fentanyl this model covers, and on what evidence?",
                                                "kind": "provenance"
                                            }
                                        ]
                                    }
                                ]
                            }
                        ]
                    }
                ]
            },
            "openQuestions": [
                "Does an existing Vercy world model already own fentanyl, requiring vr.tr.fentanyl to link to it rather than receive a separate publication?",
                "Which authoritative chemical identifiers and salt relationships should define this entry, given its missing registry definition?",
                "Which analytical methods and acceptance criteria support fentanyl identification and quantification in each intended matrix?",
                "Which product-specific evidence establishes stability, integrity and residual-content assessment across the presentations the registry needs to support?",
                "Which jurisdictions and authorised workflows must the initial model cover, and how will their changing requirements be maintained?"
            ],
            "statistics": {
                "bundles": 6,
                "layers": 11,
                "findings": 18,
                "questions": 28
            }
        },
        "draft": {
            "generator": "vr.draft.v3",
            "status": "draft-generated",
            "researched": false,
            "archetype": "chemical substance or material",
            "method": "Written from the archetype playbook - what this kind of thing needs beyond identity and provenance - and from the structure that recurred across 6,333 models already researched by two engines. Applied to this entry by rule. No source was read for this thing and no claim here is researched. This entry carries no facets of its own, so they were inferred from its domain - a guess about a whole domain applied to one thing.",
            "facetsInferred": true,
            "nextPass": "A researcher replaces this draft with a sourced specification. Treat every sentence below as a proposal to argue with.",
            "purpose": "Give an agent a durable, checkable way to recognise a fentanyl, record what state it is in, and decide what may be done with it.",
            "whatItIs": "Enable an AI agent to recognise fentanyl, assess the identity and condition of fentanyl-bearing material, and determine which evidence and authorisations are required before handling or use.",
            "characteristics": {
                "substance": "material",
                "origin": "natural",
                "agency": "inert",
                "mobility": "varies"
            },
            "whatYouCanDoWithIt": [
                "observed and measured",
                "consumed or used up"
            ],
            "distinguishingFeatures": [
                "Described in 63 Wikipedia languages, which is a measure of how widely the thing is known, not of how important it is."
            ],
            "openQuestionsForResearch": [
                "Which of the bundles below does a real task actually need, and which are ceremony?",
                "What does this thing have that the facets do not capture at all?",
                "Which neighbouring kind is most often confused with a fentanyl, and on what evidence are they told apart?"
            ],
            "whatItIsMadeOf": "matter you can touch",
            "physicalCharacter": [
                "Mobility varies between examples.",
                "Does nothing on its own; everything it does, something else did to it.",
                "These come from the domain this entry sits in rather than from the entry itself, so treat them as a first guess about the whole domain applied to one thing."
            ],
            "whatCanBeDoneWithIt": [
                "observe it, measure it, record its state",
                "use it up, and then need more of it"
            ],
            "howItIsRecognised": [
                "Not recognisable by sight in any reliable way. Appearance varies with grade, form and additives; identification is by label, by documentation, or by assay."
            ],
            "relatedModels": [],
            "standing": "Described in 63 Wikipedia languages, which measures how widely it is written about rather than how important or how common it is.",
            "structure": {
                "bundles": [
                    {
                        "id": "identity-and-classification",
                        "name": "Identity, naming and classification",
                        "description": "How an agent tells one fentanyl from another, and a fentanyl from things that resemble it.",
                        "rationale": "Recognition comes before every other claim. Without stable identity nothing else in the model can be trusted to be about the same thing twice.",
                        "layers": [
                            {
                                "id": "naming-and-identifiers",
                                "name": "Names and identifiers",
                                "description": "The names this thing goes by and the identifiers that survive translation and time.",
                                "findings": [
                                    {
                                        "id": "preferred-name-and-aliases",
                                        "name": "Preferred name, aliases and local names",
                                        "description": "Which name to use, which names mean the same thing, and which merely sound similar.",
                                        "questions": [
                                            {
                                                "id": "preferred-name-and-aliases-q01",
                                                "text": "What identifies and describes the name of a fentanyl, and in what units or vocabulary?",
                                                "kind": "definition",
                                                "answer_data": [
                                                    "identifiers",
                                                    "types and classes",
                                                    "values with units",
                                                    "explicit unknowns"
                                                ]
                                            },
                                            {
                                                "id": "preferred-name-and-aliases-q02",
                                                "text": "Who or what asserted this about the name of a fentanyl, by which method, and when was it true?",
                                                "kind": "provenance",
                                                "answer_data": [
                                                    "authority",
                                                    "method",
                                                    "evidence",
                                                    "event time",
                                                    "knowledge time"
                                                ]
                                            },
                                            {
                                                "id": "preferred-name-and-aliases-q03",
                                                "text": "What may an agent decide or do once the name of a fentanyl is known, and what must it refuse?",
                                                "kind": "action",
                                                "answer_data": [
                                                    "permitted actions",
                                                    "preconditions",
                                                    "refusals",
                                                    "escalation"
                                                ]
                                            }
                                        ]
                                    },
                                    {
                                        "id": "stable-identifiers",
                                        "name": "Stable identifiers and external keys",
                                        "description": "Identifiers that keep pointing at this kind of thing across systems and languages.",
                                        "questions": [
                                            {
                                                "id": "stable-identifiers-q01",
                                                "text": "What identifies and describes an identifier for a fentanyl, and in what units or vocabulary?",
                                                "kind": "definition",
                                                "answer_data": [
                                                    "identifiers",
                                                    "types and classes",
                                                    "values with units",
                                                    "explicit unknowns"
                                                ]
                                            },
                                            {
                                                "id": "stable-identifiers-q02",
                                                "text": "Who or what asserted this about an identifier for a fentanyl, by which method, and when was it true?",
                                                "kind": "provenance",
                                                "answer_data": [
                                                    "authority",
                                                    "method",
                                                    "evidence",
                                                    "event time",
                                                    "knowledge time"
                                                ]
                                            },
                                            {
                                                "id": "stable-identifiers-q03",
                                                "text": "What may an agent decide or do once an identifier for a fentanyl is known, and what must it refuse?",
                                                "kind": "action",
                                                "answer_data": [
                                                    "permitted actions",
                                                    "preconditions",
                                                    "refusals",
                                                    "escalation"
                                                ]
                                            }
                                        ]
                                    }
                                ]
                            },
                            {
                                "id": "classification-and-granularity",
                                "name": "Classification and granularity",
                                "description": "Where a fentanyl sits among kinds, and how finely a task needs to cut it.",
                                "findings": [
                                    {
                                        "id": "kind-and-parents",
                                        "name": "Kind, parents and neighbouring kinds",
                                        "description": "The classes this thing belongs to and the ones it is next to.",
                                        "questions": [
                                            {
                                                "id": "kind-and-parents-q01",
                                                "text": "What identifies and describes the kind of a fentanyl, and in what units or vocabulary?",
                                                "kind": "definition",
                                                "answer_data": [
                                                    "identifiers",
                                                    "types and classes",
                                                    "values with units",
                                                    "explicit unknowns"
                                                ]
                                            },
                                            {
                                                "id": "kind-and-parents-q02",
                                                "text": "Who or what asserted this about the kind of a fentanyl, by which method, and when was it true?",
                                                "kind": "provenance",
                                                "answer_data": [
                                                    "authority",
                                                    "method",
                                                    "evidence",
                                                    "event time",
                                                    "knowledge time"
                                                ]
                                            },
                                            {
                                                "id": "kind-and-parents-q03",
                                                "text": "What may an agent decide or do once the kind of a fentanyl is known, and what must it refuse?",
                                                "kind": "action",
                                                "answer_data": [
                                                    "permitted actions",
                                                    "preconditions",
                                                    "refusals",
                                                    "escalation"
                                                ]
                                            }
                                        ]
                                    },
                                    {
                                        "id": "distinguishing-features",
                                        "name": "Distinguishing features",
                                        "description": "What separates a fentanyl from the things most often confused with it.",
                                        "questions": [
                                            {
                                                "id": "distinguishing-features-q01",
                                                "text": "What identifies and describes what distinguishes a fentanyl, and in what units or vocabulary?",
                                                "kind": "definition",
                                                "answer_data": [
                                                    "identifiers",
                                                    "types and classes",
                                                    "values with units",
                                                    "explicit unknowns"
                                                ]
                                            },
                                            {
                                                "id": "distinguishing-features-q02",
                                                "text": "Who or what asserted this about what distinguishes a fentanyl, by which method, and when was it true?",
                                                "kind": "provenance",
                                                "answer_data": [
                                                    "authority",
                                                    "method",
                                                    "evidence",
                                                    "event time",
                                                    "knowledge time"
                                                ]
                                            },
                                            {
                                                "id": "distinguishing-features-q03",
                                                "text": "What may an agent decide or do once what distinguishes a fentanyl is known, and what must it refuse?",
                                                "kind": "action",
                                                "answer_data": [
                                                    "permitted actions",
                                                    "preconditions",
                                                    "refusals",
                                                    "escalation"
                                                ]
                                            }
                                        ]
                                    }
                                ]
                            }
                        ]
                    },
                    {
                        "id": "form-and-composition",
                        "name": "Form, composition and condition",
                        "description": "What a fentanyl is made of, what shape and size it takes, and what state it is in.",
                        "rationale": "A physical thing can be measured, and a model that cannot record its measurements cannot support any decision that depends on them.",
                        "layers": [
                            {
                                "id": "form-and-dimensions",
                                "name": "Form and dimensions",
                                "description": "Shape, size, mass and the ranges these take across examples.",
                                "findings": [
                                    {
                                        "id": "measurable-dimensions",
                                        "name": "Measurable dimensions and their units",
                                        "description": "The quantities worth recording and the units they are recorded in.",
                                        "questions": [
                                            {
                                                "id": "measurable-dimensions-q01",
                                                "text": "What identifies and describes the dimensions of a fentanyl, and in what units or vocabulary?",
                                                "kind": "definition",
                                                "answer_data": [
                                                    "identifiers",
                                                    "types and classes",
                                                    "values with units",
                                                    "explicit unknowns"
                                                ]
                                            },
                                            {
                                                "id": "measurable-dimensions-q02",
                                                "text": "Who or what asserted this about the dimensions of a fentanyl, by which method, and when was it true?",
                                                "kind": "provenance",
                                                "answer_data": [
                                                    "authority",
                                                    "method",
                                                    "evidence",
                                                    "event time",
                                                    "knowledge time"
                                                ]
                                            },
                                            {
                                                "id": "measurable-dimensions-q03",
                                                "text": "What may an agent decide or do once the dimensions of a fentanyl is known, and what must it refuse?",
                                                "kind": "action",
                                                "answer_data": [
                                                    "permitted actions",
                                                    "preconditions",
                                                    "refusals",
                                                    "escalation"
                                                ]
                                            }
                                        ]
                                    }
                                ]
                            },
                            {
                                "id": "material-and-composition",
                                "name": "Material and composition",
                                "description": "Materials, parts and how they are put together.",
                                "findings": [
                                    {
                                        "id": "parts-and-materials",
                                        "name": "Parts and materials",
                                        "description": "What a fentanyl is built from and which parts are replaceable.",
                                        "questions": [
                                            {
                                                "id": "parts-and-materials-q01",
                                                "text": "What identifies and describes the composition of a fentanyl, and in what units or vocabulary?",
                                                "kind": "definition",
                                                "answer_data": [
                                                    "identifiers",
                                                    "types and classes",
                                                    "values with units",
                                                    "explicit unknowns"
                                                ]
                                            },
                                            {
                                                "id": "parts-and-materials-q02",
                                                "text": "Who or what asserted this about the composition of a fentanyl, by which method, and when was it true?",
                                                "kind": "provenance",
                                                "answer_data": [
                                                    "authority",
                                                    "method",
                                                    "evidence",
                                                    "event time",
                                                    "knowledge time"
                                                ]
                                            },
                                            {
                                                "id": "parts-and-materials-q03",
                                                "text": "What may an agent decide or do once the composition of a fentanyl is known, and what must it refuse?",
                                                "kind": "action",
                                                "answer_data": [
                                                    "permitted actions",
                                                    "preconditions",
                                                    "refusals",
                                                    "escalation"
                                                ]
                                            }
                                        ]
                                    }
                                ]
                            },
                            {
                                "id": "condition-and-integrity",
                                "name": "Condition and integrity",
                                "description": "Wear, damage, health and the difference between working and broken.",
                                "findings": [
                                    {
                                        "id": "condition-assessment",
                                        "name": "Condition, damage and health",
                                        "description": "How the condition of a fentanyl is judged and by whom.",
                                        "questions": [
                                            {
                                                "id": "condition-assessment-q01",
                                                "text": "What identifies and describes the condition of a fentanyl, and in what units or vocabulary?",
                                                "kind": "definition",
                                                "answer_data": [
                                                    "identifiers",
                                                    "types and classes",
                                                    "values with units",
                                                    "explicit unknowns"
                                                ]
                                            },
                                            {
                                                "id": "condition-assessment-q02",
                                                "text": "Who or what asserted this about the condition of a fentanyl, by which method, and when was it true?",
                                                "kind": "provenance",
                                                "answer_data": [
                                                    "authority",
                                                    "method",
                                                    "evidence",
                                                    "event time",
                                                    "knowledge time"
                                                ]
                                            },
                                            {
                                                "id": "condition-assessment-q03",
                                                "text": "What may an agent decide or do once the condition of a fentanyl is known, and what must it refuse?",
                                                "kind": "action",
                                                "answer_data": [
                                                    "permitted actions",
                                                    "preconditions",
                                                    "refusals",
                                                    "escalation"
                                                ]
                                            }
                                        ]
                                    }
                                ]
                            }
                        ]
                    },
                    {
                        "id": "place-and-movement",
                        "name": "Place and movement",
                        "description": "Where a fentanyl is, how it got there and where it may go (varies).",
                        "rationale": "A thing that can move needs its position recorded with a time, or every later claim about it is about a place it has left.",
                        "layers": [
                            {
                                "id": "location-and-placement",
                                "name": "Location and placement",
                                "description": "Position, containment and the reference frame the position is given in.",
                                "findings": [
                                    {
                                        "id": "position-and-frame",
                                        "name": "Position, container and reference frame",
                                        "description": "Where a fentanyl is, and what that position is measured against.",
                                        "questions": [
                                            {
                                                "id": "position-and-frame-q01",
                                                "text": "What identifies and describes the location of a fentanyl, and in what units or vocabulary?",
                                                "kind": "definition",
                                                "answer_data": [
                                                    "identifiers",
                                                    "types and classes",
                                                    "values with units",
                                                    "explicit unknowns"
                                                ]
                                            },
                                            {
                                                "id": "position-and-frame-q02",
                                                "text": "Who or what asserted this about the location of a fentanyl, by which method, and when was it true?",
                                                "kind": "provenance",
                                                "answer_data": [
                                                    "authority",
                                                    "method",
                                                    "evidence",
                                                    "event time",
                                                    "knowledge time"
                                                ]
                                            },
                                            {
                                                "id": "position-and-frame-q03",
                                                "text": "What may an agent decide or do once the location of a fentanyl is known, and what must it refuse?",
                                                "kind": "action",
                                                "answer_data": [
                                                    "permitted actions",
                                                    "preconditions",
                                                    "refusals",
                                                    "escalation"
                                                ]
                                            }
                                        ]
                                    }
                                ]
                            },
                            {
                                "id": "movement-and-transfer",
                                "name": "Movement and transfer",
                                "description": "How a fentanyl is carried, installed or relocated.",
                                "findings": [
                                    {
                                        "id": "movement-events",
                                        "name": "Movement events and constraints",
                                        "description": "What counts as a movement, what records it and what limits it.",
                                        "questions": [
                                            {
                                                "id": "movement-events-q01",
                                                "text": "What identifies and describes the movement of a fentanyl, and in what units or vocabulary?",
                                                "kind": "definition",
                                                "answer_data": [
                                                    "identifiers",
                                                    "types and classes",
                                                    "values with units",
                                                    "explicit unknowns"
                                                ]
                                            },
                                            {
                                                "id": "movement-events-q02",
                                                "text": "Who or what asserted this about the movement of a fentanyl, by which method, and when was it true?",
                                                "kind": "provenance",
                                                "answer_data": [
                                                    "authority",
                                                    "method",
                                                    "evidence",
                                                    "event time",
                                                    "knowledge time"
                                                ]
                                            },
                                            {
                                                "id": "movement-events-q03",
                                                "text": "What may an agent decide or do once the movement of a fentanyl is known, and what must it refuse?",
                                                "kind": "action",
                                                "answer_data": [
                                                    "permitted actions",
                                                    "preconditions",
                                                    "refusals",
                                                    "escalation"
                                                ]
                                            }
                                        ]
                                    }
                                ]
                            }
                        ]
                    },
                    {
                        "id": "state-and-lifecycle",
                        "name": "State and lifecycle",
                        "description": "The states a fentanyl passes through and the events that move it between them.",
                        "rationale": "Most decisions about a thing depend on what state it is in now, which is a claim with a time on it, not a property.",
                        "layers": [
                            {
                                "id": "lifecycle-stages",
                                "name": "Lifecycle stages",
                                "description": "From coming into existence to ceasing to be one of these.",
                                "findings": [
                                    {
                                        "id": "stages-and-transitions",
                                        "name": "Stages and transitions",
                                        "description": "The stages worth naming and what moves a fentanyl between them.",
                                        "questions": [
                                            {
                                                "id": "stages-and-transitions-q01",
                                                "text": "What identifies and describes the lifecycle of a fentanyl, and in what units or vocabulary?",
                                                "kind": "definition",
                                                "answer_data": [
                                                    "identifiers",
                                                    "types and classes",
                                                    "values with units",
                                                    "explicit unknowns"
                                                ]
                                            },
                                            {
                                                "id": "stages-and-transitions-q02",
                                                "text": "Who or what asserted this about the lifecycle of a fentanyl, by which method, and when was it true?",
                                                "kind": "provenance",
                                                "answer_data": [
                                                    "authority",
                                                    "method",
                                                    "evidence",
                                                    "event time",
                                                    "knowledge time"
                                                ]
                                            },
                                            {
                                                "id": "stages-and-transitions-q03",
                                                "text": "What may an agent decide or do once the lifecycle of a fentanyl is known, and what must it refuse?",
                                                "kind": "action",
                                                "answer_data": [
                                                    "permitted actions",
                                                    "preconditions",
                                                    "refusals",
                                                    "escalation"
                                                ]
                                            }
                                        ]
                                    }
                                ]
                            },
                            {
                                "id": "observations-and-status",
                                "name": "Observations and current status",
                                "description": "What is observed about a fentanyl, how often and by whom.",
                                "findings": [
                                    {
                                        "id": "observation-record",
                                        "name": "Observation record",
                                        "description": "How an observation of a fentanyl is recorded so that it can be superseded rather than overwritten.",
                                        "questions": [
                                            {
                                                "id": "observation-record-q01",
                                                "text": "What identifies and describes an observation of a fentanyl, and in what units or vocabulary?",
                                                "kind": "definition",
                                                "answer_data": [
                                                    "identifiers",
                                                    "types and classes",
                                                    "values with units",
                                                    "explicit unknowns"
                                                ]
                                            },
                                            {
                                                "id": "observation-record-q02",
                                                "text": "Who or what asserted this about an observation of a fentanyl, by which method, and when was it true?",
                                                "kind": "provenance",
                                                "answer_data": [
                                                    "authority",
                                                    "method",
                                                    "evidence",
                                                    "event time",
                                                    "knowledge time"
                                                ]
                                            },
                                            {
                                                "id": "observation-record-q03",
                                                "text": "What may an agent decide or do once an observation of a fentanyl is known, and what must it refuse?",
                                                "kind": "action",
                                                "answer_data": [
                                                    "permitted actions",
                                                    "preconditions",
                                                    "refusals",
                                                    "escalation"
                                                ]
                                            }
                                        ]
                                    }
                                ]
                            }
                        ]
                    },
                    {
                        "id": "use-and-operation",
                        "name": "Use and operation",
                        "description": "What can be done with a fentanyl and what it takes to do it.",
                        "rationale": "An agent that can recognise a thing but not act on it has only half a model.",
                        "layers": [
                            {
                                "id": "intended-use",
                                "name": "Intended use and function",
                                "description": "What a fentanyl is for, and what it is used for anyway.",
                                "findings": [
                                    {
                                        "id": "function-and-purpose",
                                        "name": "Function, purpose and misuse",
                                        "description": "The function a fentanyl performs and the uses that fall outside it.",
                                        "questions": [
                                            {
                                                "id": "function-and-purpose-q01",
                                                "text": "What identifies and describes the use of a fentanyl, and in what units or vocabulary?",
                                                "kind": "definition",
                                                "answer_data": [
                                                    "identifiers",
                                                    "types and classes",
                                                    "values with units",
                                                    "explicit unknowns"
                                                ]
                                            },
                                            {
                                                "id": "function-and-purpose-q02",
                                                "text": "Who or what asserted this about the use of a fentanyl, by which method, and when was it true?",
                                                "kind": "provenance",
                                                "answer_data": [
                                                    "authority",
                                                    "method",
                                                    "evidence",
                                                    "event time",
                                                    "knowledge time"
                                                ]
                                            },
                                            {
                                                "id": "function-and-purpose-q03",
                                                "text": "What may an agent decide or do once the use of a fentanyl is known, and what must it refuse?",
                                                "kind": "action",
                                                "answer_data": [
                                                    "permitted actions",
                                                    "preconditions",
                                                    "refusals",
                                                    "escalation"
                                                ]
                                            }
                                        ]
                                    }
                                ]
                            },
                            {
                                "id": "handling-and-procedure",
                                "name": "Handling and procedure",
                                "description": "The steps, skills and tools involved in using a fentanyl.",
                                "findings": [
                                    {
                                        "id": "procedures-and-skills",
                                        "name": "Procedures, skills and required tools",
                                        "description": "What an agent needs before it can act on a fentanyl at all.",
                                        "questions": [
                                            {
                                                "id": "procedures-and-skills-q01",
                                                "text": "What identifies and describes handling a fentanyl, and in what units or vocabulary?",
                                                "kind": "definition",
                                                "answer_data": [
                                                    "identifiers",
                                                    "types and classes",
                                                    "values with units",
                                                    "explicit unknowns"
                                                ]
                                            },
                                            {
                                                "id": "procedures-and-skills-q02",
                                                "text": "Who or what asserted this about handling a fentanyl, by which method, and when was it true?",
                                                "kind": "provenance",
                                                "answer_data": [
                                                    "authority",
                                                    "method",
                                                    "evidence",
                                                    "event time",
                                                    "knowledge time"
                                                ]
                                            },
                                            {
                                                "id": "procedures-and-skills-q03",
                                                "text": "What may an agent decide or do once handling a fentanyl is known, and what must it refuse?",
                                                "kind": "action",
                                                "answer_data": [
                                                    "permitted actions",
                                                    "preconditions",
                                                    "refusals",
                                                    "escalation"
                                                ]
                                            }
                                        ]
                                    }
                                ]
                            },
                            {
                                "id": "supply-and-consumption",
                                "name": "Supply and consumption",
                                "description": "Quantities, rates and what running out means.",
                                "findings": [
                                    {
                                        "id": "consumption-and-stock",
                                        "name": "Consumption, stock and replenishment",
                                        "description": "How much of a fentanyl there is and how fast it goes.",
                                        "questions": [
                                            {
                                                "id": "consumption-and-stock-q01",
                                                "text": "What identifies and describes the supply of a fentanyl, and in what units or vocabulary?",
                                                "kind": "definition",
                                                "answer_data": [
                                                    "identifiers",
                                                    "types and classes",
                                                    "values with units",
                                                    "explicit unknowns"
                                                ]
                                            },
                                            {
                                                "id": "consumption-and-stock-q02",
                                                "text": "Who or what asserted this about the supply of a fentanyl, by which method, and when was it true?",
                                                "kind": "provenance",
                                                "answer_data": [
                                                    "authority",
                                                    "method",
                                                    "evidence",
                                                    "event time",
                                                    "knowledge time"
                                                ]
                                            },
                                            {
                                                "id": "consumption-and-stock-q03",
                                                "text": "What may an agent decide or do once the supply of a fentanyl is known, and what must it refuse?",
                                                "kind": "action",
                                                "answer_data": [
                                                    "permitted actions",
                                                    "preconditions",
                                                    "refusals",
                                                    "escalation"
                                                ]
                                            }
                                        ]
                                    }
                                ]
                            }
                        ]
                    },
                    {
                        "id": "composition-and-identity",
                        "name": "Composition, grade and chemical identity",
                        "description": "What fentanyl is made of and how pure the thing in hand is.",
                        "rationale": "Grade decides what a substance may be used for, so a model that records only the name cannot support any decision about use.",
                        "layers": [
                            {
                                "id": "chemical-identity",
                                "name": "Chemical identity",
                                "description": "Formula, structure and the registry numbers that name it unambiguously.",
                                "findings": [
                                    {
                                        "id": "identity-record",
                                        "name": "Identity and registry numbers",
                                        "description": "What identifies this substance across suppliers and regulators.",
                                        "questions": [
                                            {
                                                "id": "identity-record-q01",
                                                "text": "What formula, structure and registry identifiers name fentanyl unambiguously?",
                                                "kind": "definition"
                                            },
                                            {
                                                "id": "identity-record-q02",
                                                "text": "Which related substances share a name in common use but not an identifier?",
                                                "kind": "boundary"
                                            }
                                        ]
                                    }
                                ]
                            },
                            {
                                "id": "grade-and-impurities",
                                "name": "Grade, purity and impurities",
                                "description": "The specification a batch meets and what else is in it.",
                                "findings": [
                                    {
                                        "id": "specification",
                                        "name": "Specification and assay",
                                        "description": "How purity is stated and measured, and which impurities matter.",
                                        "questions": [
                                            {
                                                "id": "specification-q01",
                                                "text": "What grades of fentanyl exist, how is purity assayed, and which impurities are limited?",
                                                "kind": "measurement"
                                            },
                                            {
                                                "id": "specification-q02",
                                                "text": "Which use requires which grade, and what happens when a lower grade is substituted?",
                                                "kind": "action"
                                            }
                                        ]
                                    }
                                ]
                            }
                        ]
                    },
                    {
                        "id": "properties-and-behaviour",
                        "name": "Properties and behaviour",
                        "description": "How fentanyl behaves under conditions an agent can measure or change.",
                        "rationale": "Physical constants are the part of a substance model that transfers between contexts, and each needs its unit and its conditions.",
                        "layers": [
                            {
                                "id": "physical-constants",
                                "name": "Physical constants",
                                "description": "Values that hold for the pure substance, with their conditions.",
                                "findings": [
                                    {
                                        "id": "constants-record",
                                        "name": "Constants and conditions",
                                        "description": "The quantities worth recording and the state they apply in.",
                                        "questions": [
                                            {
                                                "id": "constants-record-q01",
                                                "text": "What are the defining physical constants of fentanyl, in what units and under what conditions?",
                                                "kind": "measurement"
                                            },
                                            {
                                                "id": "constants-record-q02",
                                                "text": "Which of these values change with grade or form rather than being fixed?",
                                                "kind": "boundary"
                                            }
                                        ]
                                    }
                                ]
                            },
                            {
                                "id": "stability-and-reactivity",
                                "name": "Stability and reactivity",
                                "description": "What it reacts with, degrades into, and how it is stored.",
                                "findings": [
                                    {
                                        "id": "incompatibilities",
                                        "name": "Incompatibilities and degradation",
                                        "description": "What must not meet it, and what it becomes over time.",
                                        "questions": [
                                            {
                                                "id": "incompatibilities-q01",
                                                "text": "What is fentanyl incompatible with, and what does it degrade into under storage?",
                                                "kind": "definition"
                                            },
                                            {
                                                "id": "incompatibilities-q02",
                                                "text": "What storage and handling does that require, and who is competent to do it?",
                                                "kind": "action"
                                            }
                                        ]
                                    }
                                ]
                            }
                        ]
                    },
                    {
                        "id": "hazard-and-regulation",
                        "name": "Hazard classification and regulation",
                        "description": "How fentanyl can harm, and what the law says about holding and moving it.",
                        "rationale": "A substance model without its hazard class and its regulatory identity is unusable in exactly the situations that matter.",
                        "layers": [
                            {
                                "id": "hazard-class",
                                "name": "Hazard classification",
                                "description": "Classified hazards, exposure limits and protective measures.",
                                "findings": [
                                    {
                                        "id": "classified-hazards",
                                        "name": "Classified hazards and limits",
                                        "description": "The classification, the scheme it belongs to, and the limits set.",
                                        "questions": [
                                            {
                                                "id": "classified-hazards-q01",
                                                "text": "How is fentanyl classified for hazard, under which scheme, and what exposure limits apply?",
                                                "kind": "definition"
                                            },
                                            {
                                                "id": "classified-hazards-q02",
                                                "text": "What protection does handling require, and what must an agent refuse to do without it?",
                                                "kind": "action"
                                            }
                                        ]
                                    }
                                ]
                            },
                            {
                                "id": "regulatory-identity",
                                "name": "Regulatory identity and control",
                                "description": "Registration, restriction and transport rules by jurisdiction.",
                                "findings": [
                                    {
                                        "id": "controls",
                                        "name": "Controls and jurisdiction",
                                        "description": "Where it is restricted and what the restriction attaches to.",
                                        "questions": [
                                            {
                                                "id": "controls-q01",
                                                "text": "Which registrations, restrictions or transport rules cover fentanyl, and where?",
                                                "kind": "provenance"
                                            },
                                            {
                                                "id": "controls-q02",
                                                "text": "Does the control attach to the substance, its concentration, or its intended use?",
                                                "kind": "boundary"
                                            }
                                        ]
                                    }
                                ]
                            }
                        ]
                    },
                    {
                        "id": "provenance-and-evidence",
                        "name": "Provenance, evidence and time",
                        "description": "Where every claim about a fentanyl came from and when it held.",
                        "rationale": "A claim without a source and a time cannot be superseded, only overwritten, and an agent that overwrites loses the ability to explain itself.",
                        "layers": [
                            {
                                "id": "source-and-authority",
                                "name": "Source and authority",
                                "description": "Who said it, on what evidence, and how strongly.",
                                "findings": [
                                    {
                                        "id": "claim-provenance",
                                        "name": "Claim provenance and confidence",
                                        "description": "The authority behind each claim about a fentanyl and how confident it is.",
                                        "questions": [
                                            {
                                                "id": "claim-provenance-q01",
                                                "text": "What identifies and describes a claim about a fentanyl, and in what units or vocabulary?",
                                                "kind": "definition",
                                                "answer_data": [
                                                    "identifiers",
                                                    "types and classes",
                                                    "values with units",
                                                    "explicit unknowns"
                                                ]
                                            },
                                            {
                                                "id": "claim-provenance-q02",
                                                "text": "Who or what asserted this about a claim about a fentanyl, by which method, and when was it true?",
                                                "kind": "provenance",
                                                "answer_data": [
                                                    "authority",
                                                    "method",
                                                    "evidence",
                                                    "event time",
                                                    "knowledge time"
                                                ]
                                            },
                                            {
                                                "id": "claim-provenance-q03",
                                                "text": "What may an agent decide or do once a claim about a fentanyl is known, and what must it refuse?",
                                                "kind": "action",
                                                "answer_data": [
                                                    "permitted actions",
                                                    "preconditions",
                                                    "refusals",
                                                    "escalation"
                                                ]
                                            }
                                        ]
                                    }
                                ]
                            },
                            {
                                "id": "time-and-versions",
                                "name": "Time, versions and supersession",
                                "description": "When a claim was true, when it was learnt, and what replaced it.",
                                "findings": [
                                    {
                                        "id": "validity-and-supersession",
                                        "name": "Validity period and supersession",
                                        "description": "How an old claim about a fentanyl is retired without being erased.",
                                        "questions": [
                                            {
                                                "id": "validity-and-supersession-q01",
                                                "text": "What identifies and describes the validity of a claim about a fentanyl, and in what units or vocabulary?",
                                                "kind": "definition",
                                                "answer_data": [
                                                    "identifiers",
                                                    "types and classes",
                                                    "values with units",
                                                    "explicit unknowns"
                                                ]
                                            },
                                            {
                                                "id": "validity-and-supersession-q02",
                                                "text": "Who or what asserted this about the validity of a claim about a fentanyl, by which method, and when was it true?",
                                                "kind": "provenance",
                                                "answer_data": [
                                                    "authority",
                                                    "method",
                                                    "evidence",
                                                    "event time",
                                                    "knowledge time"
                                                ]
                                            },
                                            {
                                                "id": "validity-and-supersession-q03",
                                                "text": "What may an agent decide or do once the validity of a claim about a fentanyl is known, and what must it refuse?",
                                                "kind": "action",
                                                "answer_data": [
                                                    "permitted actions",
                                                    "preconditions",
                                                    "refusals",
                                                    "escalation"
                                                ]
                                            }
                                        ]
                                    }
                                ]
                            }
                        ]
                    }
                ]
            },
            "statistics": {
                "bundles": 9,
                "layers": 20,
                "findings": 22,
                "questions": 60
            }
        }
    }
}