{
    "model": {
        "rank": 4881,
        "code": "thing-q182329",
        "model_id": "vr.tr.ammonium-nitrate",
        "name": "ammonium nitrate",
        "purpose": "Enable an AI agent to recognise ammonium nitrate, assess a documented sample or lot, and determine which uses or handling decisions require further evidence or qualified review.",
        "family": "Thing Registry",
        "category": "Physical world and living systems",
        "status": "research-draft",
        "kind": "thing",
        "plane": "PHY",
        "domain": "PHY.MAT",
        "industry": "",
        "version": "",
        "url": "/models/thing/q182329/",
        "tier": 2,
        "score": 71,
        "payload": {
            "layer": "wikidata",
            "aliases": [],
            "aliasCount": 0,
            "merged": 0,
            "knownIn": 71,
            "facets": null,
            "markers": [],
            "lexicalClass": "",
            "senseRank": null,
            "alsoRegisteredAs": null,
            "source": {
                "dataset": "wikidata",
                "item": "Q182329",
                "url": "https://www.wikidata.org/wiki/Q182329",
                "license": "CC0 1.0"
            }
        },
        "research": {
            "vercy": "1.0-draft",
            "publication": {
                "status": "research-draft",
                "adjudicationStatus": "unreviewed",
                "publishableCanonical": false,
                "generatedAt": "2026-09-09T21:11:47Z",
                "providers": [
                    "Codex"
                ],
                "breadth": "recalled by Codex without web access - no source was read",
                "missingProviders": [],
                "pass": 2,
                "cost": {
                    "grok": {
                        "seconds": 25.2,
                        "error": "Reading additional input from stdin...\nOpenAI Codex v0.153.4\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: 01a08802-3e1d-72a2-95bd-4c0c67889a12\n--------\nuser\nDescribe what is already known about one registered thing. Answer as JSON only, no prose around it.\n\nThing: ammonium nitrate\nSense to describe: (none recorded)\nDomain code: PHY.MAT\nAlso known as: (none)\n\n\nContext for this batch of 1001 things:\n# Batch 005: 100",
                        "usd": 0,
                        "recall": true
                    },
                    "codex": {
                        "seconds": 64.4,
                        "error": "Reading additional input from stdin...\nOpenAI Codex v0.153.4\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: 01a08802-3e23-7792-a2c4-f309c78d7da1\n--------\nuser\nYou are drafting a Vercy meta-model for one registered thing. Answer as JSON only, no prose around it.\n\nThing: ammonium nitrate\nRegistry id: vr.tr.ammonium-nitrate\nPlane / domain: PHY / PHY.MAT\nRegistry definition: (none recorded)\nNames folded into this entry:"
                    }
                }
            },
            "metaModel": {
                "id": "THING-Q182329",
                "registryId": "vr.tr.ammonium-nitrate",
                "name": "ammonium nitrate",
                "version": "0.1.0-research.1",
                "entryKind": "thing",
                "family": "Thing Registry",
                "domain": [
                    "PHY.MAT"
                ],
                "status": "research-draft"
            },
            "canonicalUrl": "https://ver.cy/models/thing/q182329/",
            "model": {
                "registry_id": "vr.tr.ammonium-nitrate",
                "name": "ammonium nitrate",
                "purpose": "Enable an AI agent to recognise ammonium nitrate, assess a documented sample or lot, and determine which uses or handling decisions require further evidence or qualified review.",
                "definition": "Ammonium nitrate is the inorganic salt NH4NO3, composed of ammonium cations and nitrate anions, typically occurring as a white crystalline solid and distinguished from nitrates generally by its ammonium counterion.",
                "scope_statement": "This model owns the substance identity and condition-dependent properties of ammonium nitrate under vr.tr.ammonium-nitrate in PHY / PHY.MAT, specialising the broader nitrate concept through its ammonium counter-ion, composition, physical behaviour, grades and hazards.",
                "in_scope": [
                    "Ammonium nitrate identity, authoritative identifiers and relationship to the broader nitrate entry",
                    "Purity, water content, additives, contamination and grade of a sample or lot",
                    "Solid form or aqueous state and the conditions under which reported properties apply",
                    "Nitrogen content and documented suitability for an intended material use",
                    "Hazard evidence, condition assessment and jurisdiction-specific regulatory identity"
                ],
                "out_of_scope": [
                    "Nitrate ions and other nitrate salts except as identity comparisons",
                    "Finished fertilisers, mixtures and other products containing ammonium nitrate",
                    "Manufacturing processes, plant design and production optimisation",
                    "Explosive formulations, initiation methods and performance optimisation",
                    "Storage-facility engineering and emergency-response procedures",
                    "Agronomic application plans and environmental nitrogen-cycle models"
                ],
                "distinguishing_features": [
                    "Identity evidence must establish both ammonium and nitrate constituents; detecting nitrate alone cannot distinguish ammonium nitrate from other nitrate salts.",
                    "The nominal formula NH4NO3 distinguishes the substance from ammonium nitrite, ammonium sulfate and metal nitrates.",
                    "A trade name or fertiliser nitrogen declaration alone does not establish ammonium nitrate identity or purity.",
                    "A product containing ammonium nitrate plus other constituents must retain a mixture or product identity linked to this substance model.",
                    "An aqueous sample must state ammonium nitrate concentration and solvent basis rather than inherit properties reported for the dry solid."
                ],
                "characteristics": [
                    {
                        "name": "Verified substance identity",
                        "kind": "relation",
                        "unit_or_values": "Registry entry linked to verified CAS, EC and PubChem records, with source and access date",
                        "why_it_matters": "Keeps the substance distinct from similarly named salts, grades and commercial products."
                    },
                    {
                        "name": "Ammonium nitrate assay",
                        "kind": "measurement",
                        "unit_or_values": "Mass fraction or mass %, specifying as-received or dry basis, method and uncertainty",
                        "why_it_matters": "Establishes how much of the sample is the named substance and supports grade assessment."
                    },
                    {
                        "name": "Water content or solution concentration",
                        "kind": "measurement",
                        "unit_or_values": "Water mass % for solids; ammonium nitrate mass % for solutions; sampling conditions",
                        "why_it_matters": "Separates moisture-bearing solids from solutions and qualifies physical-property comparisons."
                    },
                    {
                        "name": "Grade and declared additives",
                        "kind": "category",
                        "unit_or_values": "Supplier grade, referenced specification, additive identities and declared amounts; unknown permitted",
                        "why_it_matters": "Grade labels and additives can affect suitability and invalidate assumptions about pure material."
                    },
                    {
                        "name": "Physical condition",
                        "kind": "state",
                        "unit_or_values": "Solid or solution; crystal, prill or granule form where applicable; caking, visible contamination and observation date",
                        "why_it_matters": "Connects the chemical identity to the material condition actually being assessed."
                    },
                    {
                        "name": "Thermal and phase-property evidence",
                        "kind": "measurement",
                        "unit_or_values": "Temperature in °C or K with event type, pressure, composition and method; not established or not applicable permitted",
                        "why_it_matters": "Prevents phase transitions, melting and decomposition observations from being treated as interchangeable constants."
                    },
                    {
                        "name": "Nitrogen content",
                        "kind": "measurement",
                        "unit_or_values": "Total, ammonium and nitrate nitrogen as mass %, with reporting basis and analytical method",
                        "why_it_matters": "Supports composition checks and documented nutrient-grade claims without substituting for substance identification."
                    },
                    {
                        "name": "Hazard and regulatory applicability",
                        "kind": "relation",
                        "unit_or_values": "Applicable classification or requirement linked to jurisdiction, composition, physical form, source and effective date",
                        "why_it_matters": "Avoids treating a classification for one product or jurisdiction as universally applicable."
                    }
                ],
                "affordances": [
                    "Match a sample or supplier record to verified ammonium nitrate identity evidence.",
                    "Compare a lot certificate with a named grade specification and flag missing or inconsistent measurements.",
                    "Determine whether reported properties apply to the sample's composition, moisture and physical state.",
                    "Link an ammonium-nitrate-containing product to this substance while preserving the product's separate identity.",
                    "Identify missing evidence that prevents a use, storage or transport decision and route it to a qualified reviewer."
                ]
            },
            "sources": [],
            "structure": {
                "bundles": [
                    {
                        "id": "ammonium-nitrate-identity",
                        "name": "Ammonium nitrate identity",
                        "description": "Establishes the specific salt represented by the entry and its boundaries with nitrate and containing products.",
                        "rationale": "A nitrate result or commercial label does not by itself identify ammonium nitrate.",
                        "layers": [
                            {
                                "id": "salt-identity",
                                "name": "Salt identity",
                                "description": "Connects the ammonium and nitrate composition to authoritative substance records.",
                                "findings": [
                                    {
                                        "id": "identity-evidence",
                                        "name": "Identity evidence",
                                        "description": "Record evidence supporting the nominal NH4NO3 identity and reconcile external identifiers.",
                                        "questions": [
                                            {
                                                "text": "What analytical or documentary evidence identifies the material as ammonium nitrate rather than merely a nitrate-containing material?",
                                                "kind": "definition",
                                                "id": "identity-evidence-q01"
                                            },
                                            {
                                                "text": "Which authoritative records verify its CAS number, EC number and PubChem CID, and do their substance scopes agree?",
                                                "kind": "provenance",
                                                "id": "identity-evidence-q02"
                                            }
                                        ]
                                    }
                                ]
                            },
                            {
                                "id": "nitrate-and-product-boundaries",
                                "name": "Nitrate and product boundaries",
                                "description": "Separates inherited nitrate concepts from this salt and from products containing it.",
                                "findings": [
                                    {
                                        "id": "registry-and-mixture-boundary",
                                        "name": "Registry and mixture boundary",
                                        "description": "Keep the broader nitrate relationship explicit and distinguish the substance from solution or formulated-product records.",
                                        "questions": [
                                            {
                                                "text": "Which properties belong to the broader nitrate model, and which depend specifically on the ammonium counter-ion?",
                                                "kind": "boundary",
                                                "id": "registry-and-mixture-boundary-q01"
                                            },
                                            {
                                                "text": "Does the record describe ammonium nitrate itself, an aqueous sample, or a formulated product requiring a separate linked model?",
                                                "kind": "boundary",
                                                "id": "registry-and-mixture-boundary-q02"
                                            }
                                        ]
                                    }
                                ]
                            }
                        ]
                    },
                    {
                        "id": "assay-grade-and-nitrogen",
                        "name": "Assay, grade and nitrogen",
                        "description": "Describes the measured composition and the evidence behind a declared ammonium nitrate grade.",
                        "rationale": "Purity, nutrient declarations and supplier grade names answer different questions and must be reconciled.",
                        "layers": [
                            {
                                "id": "composition-basis",
                                "name": "Composition basis",
                                "description": "Makes assay, water and nitrogen results comparable on an explicit reporting basis.",
                                "findings": [
                                    {
                                        "id": "assay-and-nitrogen-reconciliation",
                                        "name": "Assay and nitrogen reconciliation",
                                        "description": "Record ammonium nitrate assay alongside water and nitrogen measurements without treating one as proof of the others.",
                                        "questions": [
                                            {
                                                "text": "What are the measured ammonium nitrate assay and water content, and are the results reported on an as-received or dry basis?",
                                                "kind": "measurement",
                                                "id": "assay-and-nitrogen-reconciliation-q01"
                                            },
                                            {
                                                "text": "Are total nitrogen and the ammonium- and nitrate-nitrogen fractions consistent with the declared composition within the methods' uncertainties?",
                                                "kind": "measurement",
                                                "id": "assay-and-nitrogen-reconciliation-q02"
                                            }
                                        ]
                                    }
                                ]
                            },
                            {
                                "id": "grade-and-other-constituents",
                                "name": "Grade and other constituents",
                                "description": "Links grade claims to specifications, additives and impurity evidence.",
                                "findings": [
                                    {
                                        "id": "grade-qualification",
                                        "name": "Grade qualification",
                                        "description": "Treat a grade as a supported specification claim rather than a synonym for the substance.",
                                        "questions": [
                                            {
                                                "text": "Which dated specification defines the claimed grade, and which lot-specific certificate supports compliance?",
                                                "kind": "provenance",
                                                "id": "grade-qualification-q01"
                                            },
                                            {
                                                "text": "Which additives or impurities are declared or measured, and do they change the material's identity boundary or eligibility for the intended use?",
                                                "kind": "boundary",
                                                "id": "grade-qualification-q02"
                                            }
                                        ]
                                    }
                                ]
                            }
                        ]
                    },
                    {
                        "id": "physical-state-and-property-context",
                        "name": "Physical state and property context",
                        "description": "Qualifies ammonium nitrate properties by water content, temperature, solid form and measurement conditions.",
                        "rationale": "A single unqualified property table cannot reliably describe dry solids, moisture-affected material and solutions.",
                        "layers": [
                            {
                                "id": "solid-and-solution-condition",
                                "name": "Solid and solution condition",
                                "description": "Records the observed material form and evidence of changes during its history.",
                                "findings": [
                                    {
                                        "id": "observed-material-state",
                                        "name": "Observed material state",
                                        "description": "Describe the sample's current physical form, moisture condition and relevant observations.",
                                        "questions": [
                                            {
                                                "text": "Is the sample a crystalline solid, prill, granule or aqueous solution, and what temperature and water-content evidence accompanies that description?",
                                                "kind": "measurement",
                                                "id": "observed-material-state-q01"
                                            },
                                            {
                                                "text": "What dated observations document caking, dissolution, recrystallisation or other changes, and what remains unconfirmed about their causes?",
                                                "kind": "provenance",
                                                "id": "observed-material-state-q02"
                                            }
                                        ]
                                    }
                                ]
                            },
                            {
                                "id": "qualified-physical-constants",
                                "name": "Qualified physical constants",
                                "description": "Distinguishes measured phase and thermal events and records other properties only with their conditions.",
                                "findings": [
                                    {
                                        "id": "property-applicability",
                                        "name": "Property applicability",
                                        "description": "Attach composition, units, conditions and method to reported thermal transitions, density and solubility.",
                                        "questions": [
                                            {
                                                "text": "Which sourced temperatures describe solid-state transitions, melting or decomposition, and is a conventional boiling point meaningful for the reported conditions?",
                                                "kind": "measurement",
                                                "id": "property-applicability-q01"
                                            },
                                            {
                                                "text": "For reported density or solubility, what temperature, composition and method apply, and does density mean crystal, bulk or solution density?",
                                                "kind": "measurement",
                                                "id": "property-applicability-q02"
                                            }
                                        ]
                                    }
                                ]
                            }
                        ]
                    },
                    {
                        "id": "hazards-and-condition-assessment",
                        "name": "Hazards and condition assessment",
                        "description": "Connects ammonium nitrate hazard evidence to the actual composition and observed condition.",
                        "rationale": "Identity alone is insufficient for judging a particular lot's condition or authorising handling.",
                        "layers": [
                            {
                                "id": "documented-hazard-profile",
                                "name": "Documented hazard profile",
                                "description": "Captures applicable hazard statements and distinguishes classification from sample-specific assessment.",
                                "findings": [
                                    {
                                        "id": "hazard-evidence-scope",
                                        "name": "Hazard evidence scope",
                                        "description": "Record authoritative oxidising, thermal-decomposition and health-hazard evidence with its material scope.",
                                        "questions": [
                                            {
                                                "text": "Which current authoritative sources establish the relevant oxidising, thermal-decomposition and health hazards for this composition and form?",
                                                "kind": "provenance",
                                                "id": "hazard-evidence-scope-q01"
                                            },
                                            {
                                                "text": "Which GHS classifications and statements apply under the selected jurisdiction, and are they substance-level or supplier-product classifications?",
                                                "kind": "boundary",
                                                "id": "hazard-evidence-scope-q02"
                                            }
                                        ]
                                    }
                                ]
                            },
                            {
                                "id": "condition-and-exposure-review",
                                "name": "Condition and exposure review",
                                "description": "Identifies unresolved material-condition and exposure issues requiring competent assessment.",
                                "findings": [
                                    {
                                        "id": "review-triggers",
                                        "name": "Review triggers",
                                        "description": "Track compromised identity, contamination, abnormal condition and missing exposure evidence as decision constraints.",
                                        "questions": [
                                            {
                                                "text": "What documented contamination, abnormal heating, packaging damage or uncertain history requires the handling decision to be referred to a qualified safety reviewer?",
                                                "kind": "action",
                                                "id": "review-triggers-q01"
                                            },
                                            {
                                                "text": "Which exposure limits or assessment criteria apply to ammonium nitrate dust or solution mist in this jurisdiction, and are they substance-specific or generic particulate criteria?",
                                                "kind": "provenance",
                                                "id": "review-triggers-q02"
                                            }
                                        ]
                                    }
                                ]
                            }
                        ]
                    },
                    {
                        "id": "regulated-identity-and-use-decisions",
                        "name": "Regulated identity and use decisions",
                        "description": "Links the material record to applicable legal categories and evidence needed for a proposed use or movement.",
                        "rationale": "Regulatory treatment can depend on composition, grade, location and activity rather than the substance name alone.",
                        "layers": [
                            {
                                "id": "jurisdictional-applicability",
                                "name": "Jurisdictional applicability",
                                "description": "Records the legal scope of transport, supply, storage and restricted-access requirements.",
                                "findings": [
                                    {
                                        "id": "applicable-regulatory-record",
                                        "name": "Applicable regulatory record",
                                        "description": "Connect each asserted requirement to an authoritative provision and the material attributes that make it applicable.",
                                        "questions": [
                                            {
                                                "text": "Which current transport designation and classification apply to the actual composition and form for the intended transport mode?",
                                                "kind": "boundary",
                                                "id": "applicable-regulatory-record-q01"
                                            },
                                            {
                                                "text": "Which jurisdiction-specific supply, storage or restricted-access provisions apply, and what source and effective date support each determination?",
                                                "kind": "provenance",
                                                "id": "applicable-regulatory-record-q02"
                                            }
                                        ]
                                    }
                                ]
                            },
                            {
                                "id": "evidence-for-intended-use",
                                "name": "Evidence for intended use",
                                "description": "Connects an intended use to composition, grade and compliance evidence without modelling the downstream process.",
                                "findings": [
                                    {
                                        "id": "use-eligibility-and-handoff",
                                        "name": "Use eligibility and handoff",
                                        "description": "Identify whether documented material attributes satisfy a named use requirement and where further review belongs.",
                                        "questions": [
                                            {
                                                "text": "Which composition, grade and current-condition requirements must be evidenced before this lot can be considered suitable for the stated use?",
                                                "kind": "action",
                                                "id": "use-eligibility-and-handoff-q01"
                                            },
                                            {
                                                "text": "Which unresolved requirements need a supplier, laboratory or qualified regulatory reviewer, and which downstream product or process model receives the decision?",
                                                "kind": "action",
                                                "id": "use-eligibility-and-handoff-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-confidence-notes",
                                        "name": "Check these first",
                                        "description": "Recalled without web access and unsourced; every item is a lead to verify.",
                                        "evidence": [
                                            "This is recall-based information; no sources were consulted. Verify current regulatory provisions and product-specific hazard classifications.",
                                            "Grades, particle forms and solutions overlap rather than forming mutually exclusive chemical varieties; verify purity, additives, moisture and concentration for an actual product.",
                                            "Verify physical constants against stated temperature and purity. A normal boiling point is not appropriate because thermal decomposition intervenes; no exposure limit is asserted here."
                                        ],
                                        "questions": [
                                            {
                                                "id": "evidence-confidence-notes-q01",
                                                "text": "Which of these check these first hold for the sense of ammonium nitrate this model covers, and on what evidence?",
                                                "kind": "provenance"
                                            }
                                        ]
                                    },
                                    {
                                        "id": "evidence-kinds",
                                        "name": "Kinds and varieties",
                                        "description": "Recalled without web access and unsourced; every item is a lead to verify.",
                                        "evidence": [
                                            "Fertilizer-grade ammonium nitrate",
                                            "Technical-grade ammonium nitrate",
                                            "Dense prilled ammonium nitrate",
                                            "Porous prilled ammonium nitrate",
                                            "Granular ammonium nitrate",
                                            "Aqueous ammonium nitrate solutions"
                                        ],
                                        "questions": [
                                            {
                                                "id": "evidence-kinds-q01",
                                                "text": "Which of these kinds and varieties hold for the sense of ammonium nitrate this model covers, and on what evidence?",
                                                "kind": "provenance"
                                            }
                                        ]
                                    },
                                    {
                                        "id": "evidence-identifiers",
                                        "name": "Identifiers and schemes",
                                        "description": "Recalled without web access and unsourced; every item is a lead to verify.",
                                        "evidence": [
                                            {
                                                "scheme": "CAS Registry Number",
                                                "value_or_pattern": "6484-52-2",
                                                "note": "Identifies ammonium nitrate; formulated mixtures require separate characterization."
                                            },
                                            {
                                                "scheme": "EC number",
                                                "value_or_pattern": "229-347-8",
                                                "note": "European chemical inventory identifier."
                                            },
                                            {
                                                "scheme": "PubChem CID",
                                                "value_or_pattern": "22985",
                                                "note": "Compound identifier for ammonium nitrate."
                                            },
                                            {
                                                "scheme": "Chemical formula",
                                                "value_or_pattern": "NH4NO3",
                                                "note": "An ionic salt containing NH4+ and NO3−."
                                            }
                                        ],
                                        "questions": [
                                            {
                                                "id": "evidence-identifiers-q01",
                                                "text": "Which of these identifiers and schemes hold for the sense of ammonium nitrate this model covers, and on what evidence?",
                                                "kind": "provenance"
                                            }
                                        ]
                                    },
                                    {
                                        "id": "evidence-standards-and-regulation",
                                        "name": "Standards and regulation",
                                        "description": "Recalled without web access and unsourced; every item is a lead to verify.",
                                        "evidence": [
                                            "United Nations Globally Harmonized System of Classification and Labelling of Chemicals: framework for communicating chemical hazards.",
                                            "United Nations Recommendations on the Transport of Dangerous Goods, Model Regulations: transport treatment depends on composition and product form.",
                                            "European Union REACH and CLP regulations: chemical registration, restrictions, classification and labelling frameworks.",
                                            "European Union Regulation (EU) 2019/1148 on the marketing and use of explosives precursors: includes ammonium nitrate."
                                        ],
                                        "questions": [
                                            {
                                                "id": "evidence-standards-and-regulation-q01",
                                                "text": "Which of these standards and regulation hold for the sense of ammonium nitrate this model covers, and on what evidence?",
                                                "kind": "provenance"
                                            }
                                        ]
                                    },
                                    {
                                        "id": "evidence-real-world-use",
                                        "name": "Real-world use",
                                        "description": "Recalled without web access and unsourced; every item is a lead to verify.",
                                        "evidence": [
                                            "Nitrogen fertilizer supplying both ammonium nitrogen and nitrate nitrogen.",
                                            "Component of formulated fertilizers.",
                                            "Oxidizing component in regulated commercial explosives used in mining and quarrying.",
                                            "Endothermic solute in some instant cold packs."
                                        ],
                                        "questions": [
                                            {
                                                "id": "evidence-real-world-use-q01",
                                                "text": "Which of these real-world use hold for the sense of ammonium nitrate this model covers, and on what evidence?",
                                                "kind": "provenance"
                                            }
                                        ]
                                    },
                                    {
                                        "id": "evidence-measurements",
                                        "name": "Typical measurements",
                                        "description": "Recalled without web access and unsourced; every item is a lead to verify.",
                                        "evidence": [
                                            {
                                                "quantity": "Molar mass",
                                                "typical_range": "80.04",
                                                "unit": "g/mol"
                                            },
                                            {
                                                "quantity": "Melting temperature of relatively pure material",
                                                "typical_range": "Approximately 169.6",
                                                "unit": "°C"
                                            },
                                            {
                                                "quantity": "Crystal density near room temperature",
                                                "typical_range": "Approximately 1.72",
                                                "unit": "g/cm³"
                                            },
                                            {
                                                "quantity": "Theoretical nitrogen content of pure material",
                                                "typical_range": "Approximately 35.0",
                                                "unit": "% by mass"
                                            }
                                        ],
                                        "questions": [
                                            {
                                                "id": "evidence-measurements-q01",
                                                "text": "Which of these typical measurements hold for the sense of ammonium nitrate this model covers, and on what evidence?",
                                                "kind": "provenance"
                                            }
                                        ]
                                    },
                                    {
                                        "id": "evidence-failure-modes-and-hazards",
                                        "name": "Failure modes and hazards",
                                        "description": "Recalled without web access and unsourced; every item is a lead to verify.",
                                        "evidence": [
                                            "Acts as an oxidizer and can intensify combustion of other materials.",
                                            "Heating can cause hazardous decomposition; severe fire exposure, confinement or contamination can create an explosion hazard.",
                                            "Decomposition can release toxic gases, including nitrogen oxides.",
                                            "Moisture uptake promotes caking, dissolution and changes in handling properties.",
                                            "Solid-state phase transitions during temperature cycling can damage granules and change bulk properties."
                                        ],
                                        "questions": [
                                            {
                                                "id": "evidence-failure-modes-and-hazards-q01",
                                                "text": "Which of these failure modes and hazards hold for the sense of ammonium nitrate this model covers, and on what evidence?",
                                                "kind": "provenance"
                                            }
                                        ]
                                    },
                                    {
                                        "id": "evidence-regional-variation",
                                        "name": "Regional variation",
                                        "description": "Recalled without web access and unsourced; every item is a lead to verify.",
                                        "evidence": [
                                            "Fertilizer availability and permissible formulations vary with national security and agricultural rules.",
                                            "Storage, transport and explosives-precursor controls differ by jurisdiction and product composition."
                                        ],
                                        "questions": [
                                            {
                                                "id": "evidence-regional-variation-q01",
                                                "text": "Which of these regional variation hold for the sense of ammonium nitrate this model covers, and on what evidence?",
                                                "kind": "provenance"
                                            }
                                        ]
                                    },
                                    {
                                        "id": "evidence-neighbours",
                                        "name": "Neighbouring kinds and how to tell them apart",
                                        "description": "Recalled without web access and unsourced; every item is a lead to verify.",
                                        "evidence": [
                                            {
                                                "name": "nitrate",
                                                "difference": "Nitrate denotes the NO3− ion or its broader class of salts and esters; ammonium nitrate is the particular salt with NH4+ as its cation."
                                            },
                                            {
                                                "name": "ammonium",
                                                "difference": "Ammonium is the NH4+ cation; ammonium nitrate is a neutral salt containing that cation and nitrate."
                                            },
                                            {
                                                "name": "calcium ammonium nitrate",
                                                "difference": "A distinct fertilizer designation commonly referring to ammonium nitrate combined with limestone or dolomite, rather than pure NH4NO3."
                                            },
                                            {
                                                "name": "ammonium nitrite",
                                                "difference": "Contains nitrite, NO2−, instead of nitrate, NO3−, and has different stability and chemical behavior."
                                            },
                                            {
                                                "name": "ammonium-nitrate-based explosives",
                                                "difference": "Formulated products containing ammonium nitrate and other ingredients; their composition and classification are distinct from the pure salt."
                                            }
                                        ],
                                        "questions": [
                                            {
                                                "id": "evidence-neighbours-q01",
                                                "text": "Which of these neighbouring kinds and how to tell them apart hold for the sense of ammonium nitrate this model covers, and on what evidence?",
                                                "kind": "provenance"
                                            }
                                        ]
                                    }
                                ]
                            }
                        ]
                    }
                ]
            },
            "openQuestions": [
                "Which authoritative identity records and existing Vercy publications should this entry link to, and does an existing world model already cover the same substance?",
                "Which grade specifications should be represented, and where do their additive or composition requirements cross into separately modelled products?",
                "Which reviewed sources establish phase-transition, melting, decomposition, density and solubility data with enough experimental context for reliable reuse?",
                "Which jurisdictions and transport modes are required initially, and what current classification, access-control and exposure provisions apply in each?",
                "What minimum analytical and history evidence is sufficient to assess a lot when its grade, moisture condition or contamination status is uncertain?"
            ],
            "statistics": {
                "bundles": 6,
                "layers": 11,
                "findings": 19,
                "questions": 29
            }
        },
        "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 ammonium nitrate, record what state it is in, and decide what may be done with it.",
            "whatItIs": "Enable an AI agent to recognise ammonium nitrate, assess a documented sample or lot, and determine which uses or handling decisions require further evidence or qualified review.",
            "characteristics": {
                "substance": "material",
                "origin": "natural",
                "agency": "inert",
                "mobility": "varies"
            },
            "whatYouCanDoWithIt": [
                "observed and measured",
                "consumed or used up"
            ],
            "distinguishingFeatures": [
                "Described in 71 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 ammonium nitrate, 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 71 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 ammonium nitrate from another, and a ammonium nitrate 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 ammonium nitrate, 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 ammonium nitrate, 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 ammonium nitrate 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 ammonium nitrate, 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 ammonium nitrate, 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 ammonium nitrate 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 ammonium nitrate 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 ammonium nitrate, 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 ammonium nitrate, 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 ammonium nitrate 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 ammonium nitrate from the things most often confused with it.",
                                        "questions": [
                                            {
                                                "id": "distinguishing-features-q01",
                                                "text": "What identifies and describes what distinguishes a ammonium nitrate, 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 ammonium nitrate, 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 ammonium nitrate 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 ammonium nitrate 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 ammonium nitrate, 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 ammonium nitrate, 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 ammonium nitrate 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 ammonium nitrate is built from and which parts are replaceable.",
                                        "questions": [
                                            {
                                                "id": "parts-and-materials-q01",
                                                "text": "What identifies and describes the composition of a ammonium nitrate, 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 ammonium nitrate, 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 ammonium nitrate 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 ammonium nitrate is judged and by whom.",
                                        "questions": [
                                            {
                                                "id": "condition-assessment-q01",
                                                "text": "What identifies and describes the condition of a ammonium nitrate, 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 ammonium nitrate, 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 ammonium nitrate 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 ammonium nitrate 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 ammonium nitrate is, and what that position is measured against.",
                                        "questions": [
                                            {
                                                "id": "position-and-frame-q01",
                                                "text": "What identifies and describes the location of a ammonium nitrate, 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 ammonium nitrate, 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 ammonium nitrate 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 ammonium nitrate 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 ammonium nitrate, 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 ammonium nitrate, 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 ammonium nitrate 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 ammonium nitrate 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 ammonium nitrate between them.",
                                        "questions": [
                                            {
                                                "id": "stages-and-transitions-q01",
                                                "text": "What identifies and describes the lifecycle of a ammonium nitrate, 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 ammonium nitrate, 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 ammonium nitrate 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 ammonium nitrate, how often and by whom.",
                                "findings": [
                                    {
                                        "id": "observation-record",
                                        "name": "Observation record",
                                        "description": "How an observation of a ammonium nitrate 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 ammonium nitrate, 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 ammonium nitrate, 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 ammonium nitrate 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 ammonium nitrate 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 ammonium nitrate is for, and what it is used for anyway.",
                                "findings": [
                                    {
                                        "id": "function-and-purpose",
                                        "name": "Function, purpose and misuse",
                                        "description": "The function a ammonium nitrate performs and the uses that fall outside it.",
                                        "questions": [
                                            {
                                                "id": "function-and-purpose-q01",
                                                "text": "What identifies and describes the use of a ammonium nitrate, 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 ammonium nitrate, 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 ammonium nitrate 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 ammonium nitrate.",
                                "findings": [
                                    {
                                        "id": "procedures-and-skills",
                                        "name": "Procedures, skills and required tools",
                                        "description": "What an agent needs before it can act on a ammonium nitrate at all.",
                                        "questions": [
                                            {
                                                "id": "procedures-and-skills-q01",
                                                "text": "What identifies and describes handling a ammonium nitrate, 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 ammonium nitrate, 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 ammonium nitrate 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 ammonium nitrate there is and how fast it goes.",
                                        "questions": [
                                            {
                                                "id": "consumption-and-stock-q01",
                                                "text": "What identifies and describes the supply of a ammonium nitrate, 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 ammonium nitrate, 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 ammonium nitrate 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 ammonium nitrate 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 ammonium nitrate 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 ammonium nitrate 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 ammonium nitrate 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 ammonium nitrate, 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 ammonium nitrate 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 ammonium nitrate 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 ammonium nitrate 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 ammonium nitrate, 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 ammonium nitrate 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 ammonium nitrate and how confident it is.",
                                        "questions": [
                                            {
                                                "id": "claim-provenance-q01",
                                                "text": "What identifies and describes a claim about a ammonium nitrate, 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 ammonium nitrate, 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 ammonium nitrate 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 ammonium nitrate is retired without being erased.",
                                        "questions": [
                                            {
                                                "id": "validity-and-supersession-q01",
                                                "text": "What identifies and describes the validity of a claim about a ammonium nitrate, 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 ammonium nitrate, 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 ammonium nitrate 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
            }
        }
    }
}