{
    "model": {
        "rank": 3594,
        "code": "thing-q2314",
        "model_id": "vr.tr.sodium-chloride",
        "name": "sodium chloride",
        "purpose": "Enable an agent to recognise sodium chloride, assess a particular material's composition and condition, and determine its suitability for a specified use.",
        "family": "Thing Registry",
        "category": "Physical world and living systems",
        "status": "research-draft",
        "kind": "thing",
        "plane": "PHY",
        "domain": "PHY.MAT",
        "industry": "",
        "version": "",
        "url": "/models/thing/q2314/",
        "tier": 2,
        "score": 84,
        "payload": {
            "layer": "wikidata",
            "aliases": [],
            "aliasCount": 0,
            "merged": 0,
            "knownIn": 84,
            "facets": null,
            "markers": [],
            "lexicalClass": "",
            "senseRank": null,
            "alsoRegisteredAs": "vr.tr.sodium-chloride",
            "source": {
                "dataset": "wikidata",
                "item": "Q2314",
                "url": "https://www.wikidata.org/wiki/Q2314",
                "license": "CC0 1.0"
            }
        },
        "research": {
            "vercy": "1.0-draft",
            "publication": {
                "status": "research-draft",
                "adjudicationStatus": "unreviewed",
                "publishableCanonical": false,
                "generatedAt": "2026-09-07T14:38:29Z",
                "providers": [
                    "Codex"
                ],
                "breadth": "recalled by Codex without web access - no source was read",
                "missingProviders": [],
                "pass": 2,
                "cost": {
                    "grok": {
                        "seconds": 25.3,
                        "error": "Reading additional input from stdin...\nOpenAI Codex v0.153.3\n--------\nworkdir: R:\\02_PROJECTS\\02_Meta_Models_Platforms\\Ver.cy\\current\\thing-registry-backlog\nmodel: gpt-6-astra\nprovider: openai\napproval: never\nsandbox: read-only\nreasoning effort: none\nreasoning summaries: none\nsession id: 01a07c4d-5476-7100-b45f-a50ecd43911a\n--------\nuser\nDescribe what is already known about one registered thing. Answer as JSON only, no prose around it.\n\nThing: sodium chloride\nSense to describe: (none recorded)\nDomain code: PHY.MAT\nAlso known as: (none)\n\n\nContext for this batch of 1001 things:\n# Batch 004: 1001",
                        "usd": 0,
                        "recall": true
                    },
                    "codex": {
                        "seconds": 72.5,
                        "error": "Reading additional input from stdin...\nOpenAI Codex v0.153.3\n--------\nworkdir: R:\\02_PROJECTS\\02_Meta_Models_Platforms\\Ver.cy\\current\\thing-registry-backlog\nmodel: gpt-6-astra\nprovider: openai\napproval: never\nsandbox: read-only\nreasoning effort: none\nreasoning summaries: none\nsession id: 01a07c4d-548b-7ac1-b18e-e048bdaf67d9\n--------\nuser\nYou are drafting a Vercy meta-model for one registered thing. Answer as JSON only, no prose around it.\n\nThing: sodium chloride\nRegistry id: vr.tr.sodium-chloride\nPlane / domain: PHY / PHY.MAT\nRegistry definition: (none recorded)\nNames folded into this entry: ("
                    }
                }
            },
            "metaModel": {
                "id": "THING-Q2314",
                "registryId": "vr.tr.sodium-chloride",
                "name": "sodium chloride",
                "version": "0.1.0-research.1",
                "entryKind": "thing",
                "family": "Thing Registry",
                "domain": [
                    "PHY.MAT"
                ],
                "status": "research-draft"
            },
            "canonicalUrl": "https://ver.cy/models/thing/q2314/",
            "model": {
                "registry_id": "vr.tr.sodium-chloride",
                "name": "sodium chloride",
                "purpose": "Enable an agent to recognise sodium chloride, assess a particular material's composition and condition, and determine its suitability for a specified use.",
                "definition": "Sodium chloride (NaCl) is an ionic compound composed of sodium and chloride ions in a 1:1 ratio, forming a crystalline solid under ordinary ambient conditions and occurring naturally as the mineral halite.",
                "scope_statement": "This model owns sodium chloride as the chemical substance NaCl and the identity, purity, grade, physical state and handling constraints of material represented as sodium chloride; solutions and formulated products remain linked neighbouring things.",
                "in_scope": [
                    "Chemical identity, substance identifiers and distinction from other chlorides or sodium salts",
                    "NaCl content, moisture, impurities, additives and evidence supporting a declared grade",
                    "Crystalline form, particle characteristics, phase and condition-dependent properties",
                    "Dissolution behaviour and suitability as an input to specified applications",
                    "Lot provenance, storage condition and applicable hazard or regulatory determinations"
                ],
                "out_of_scope": [
                    "Brines, saline preparations and other solutions as complete mixtures or products",
                    "Seasoned, iodised or otherwise formulated table-salt products beyond their relationship to NaCl",
                    "Halite deposits, salt mines and geological resource models",
                    "Salt extraction, refining and chlor-alkali processes as operating systems",
                    "Dietary plans, clinical dosing and patient-specific treatment decisions"
                ],
                "distinguishing_features": [
                    "Confirm sodium and chloride in a 1:1 molar relationship attributable to NaCl; the presence of either ion alone does not establish sodium chloride identity.",
                    "Distinguish crystalline NaCl from dissolved sodium and chloride ions by recording phase, solvent and whether the subject is a substance or a solution.",
                    "Distinguish NaCl from potassium chloride and mixed deicing salts through composition testing rather than white colour or granular appearance.",
                    "Distinguish a sodium chloride material from a formulated salt product by identifying intentional additives and other constituents.",
                    "Treat food, laboratory, industrial and pharmaceutical grades as specifications requiring evidence, not as different chemical identities or interchangeable permissions."
                ],
                "characteristics": [
                    {
                        "name": "Chemical identity",
                        "kind": "category",
                        "unit_or_values": "NaCl; sodium-to-chloride stoichiometry 1:1",
                        "why_it_matters": "Separates sodium chloride from other sodium compounds, chlorides and mixtures."
                    },
                    {
                        "name": "Substance identifier mapping",
                        "kind": "relation",
                        "unit_or_values": "Verified CAS, PubChem CID and EC records with source and identity scope",
                        "why_it_matters": "Connects the material to reference and regulatory records without confusing products with substances."
                    },
                    {
                        "name": "NaCl assay",
                        "kind": "measurement",
                        "unit_or_values": "Mass percentage with analytical method, uncertainty and dry or as-received basis",
                        "why_it_matters": "Supports purity assessment and prevents comparison of incompatible assay bases."
                    },
                    {
                        "name": "Water content",
                        "kind": "measurement",
                        "unit_or_values": "Mass percentage with method; distinguish measured water from loss on drying",
                        "why_it_matters": "Affects apparent purity, delivered NaCl mass and material handling."
                    },
                    {
                        "name": "Impurity and additive profile",
                        "kind": "measurement",
                        "unit_or_values": "Constituent-specific mg/kg or mass percentage, detection limits and intentional-addition status",
                        "why_it_matters": "Reveals restrictions that a single NaCl assay cannot capture."
                    },
                    {
                        "name": "Declared grade and conformity",
                        "kind": "relation",
                        "unit_or_values": "Named specification, edition, intended use and supporting lot certificate",
                        "why_it_matters": "Determines whether the particular material meets requirements for the proposed application."
                    },
                    {
                        "name": "Physical state",
                        "kind": "state",
                        "unit_or_values": "Crystalline solid, molten material or dissolved constituent; temperature and pressure recorded",
                        "why_it_matters": "Changes identification methods, handling and the boundary with a solution model."
                    },
                    {
                        "name": "Particle size and caking",
                        "kind": "measurement",
                        "unit_or_values": "Particle-size distribution in µm or mm; caking assessment by stated method",
                        "why_it_matters": "Affects flow, dosing, dust generation and dissolution rate."
                    },
                    {
                        "name": "Thermophysical reference properties",
                        "kind": "measurement",
                        "unit_or_values": "Melting and boiling temperatures in °C at stated pressure; crystal density in kg/m³ at stated temperature",
                        "why_it_matters": "Supports state assessment while keeping crystal density distinct from bulk packing density."
                    },
                    {
                        "name": "Aqueous solubility",
                        "kind": "measurement",
                        "unit_or_values": "g NaCl per kg water at stated temperature and solution composition",
                        "why_it_matters": "Supports dissolution planning and distinguishes equilibrium capacity from dissolution speed."
                    },
                    {
                        "name": "Hazard and exposure determination",
                        "kind": "relation",
                        "unit_or_values": "Applicable classification, SDS revision, jurisdiction, exposure route and any verified limit with units and averaging period",
                        "why_it_matters": "Grounds handling decisions in the actual material and applicable evidence."
                    }
                ],
                "affordances": [
                    "Verify whether a sample or supplier record supports sodium chloride identity.",
                    "Compare lot composition and documentation against a specified grade or intended use.",
                    "Calculate the NaCl mass delivered from an assay on a stated moisture basis.",
                    "Assess whether particle condition and storage history support reliable dispensing or dissolution.",
                    "Plan dissolution into a separately modelled solution using verified purity and solubility information.",
                    "Determine handling, storage or disposal actions from material-specific evidence and applicable requirements."
                ]
            },
            "sources": [],
            "structure": {
                "bundles": [
                    {
                        "id": "nacl-identity-and-boundaries",
                        "name": "NaCl identity and boundaries",
                        "description": "Establishes what qualifies as sodium chloride and where mixtures, products and geological occurrences begin.",
                        "rationale": "Salt is an ambiguous commercial and everyday name, and detecting sodium or chloride alone is insufficient.",
                        "layers": [
                            {
                                "id": "chemical-identity",
                                "name": "Chemical identity",
                                "description": "Connects NaCl composition to analytical evidence and authoritative substance records.",
                                "findings": [
                                    {
                                        "id": "identity-evidence",
                                        "name": "Evidence for NaCl identity",
                                        "description": "Record evidence sufficient to distinguish NaCl from other salts and coincidental mixtures of sodium-bearing and chloride-bearing constituents.",
                                        "questions": [
                                            {
                                                "text": "What analytical evidence establishes NaCl identity rather than merely detecting sodium and chloride?",
                                                "kind": "definition",
                                                "id": "identity-evidence-q01"
                                            },
                                            {
                                                "text": "Which verified CAS, PubChem and EC records refer to this substance identity?",
                                                "kind": "provenance",
                                                "id": "identity-evidence-q02"
                                            }
                                        ]
                                    }
                                ]
                            },
                            {
                                "id": "substance-product-boundary",
                                "name": "Substance and product boundary",
                                "description": "Separates sodium chloride identity from the identity of a solution, formulation or natural occurrence.",
                                "findings": [
                                    {
                                        "id": "represented-material",
                                        "name": "Represented material",
                                        "description": "Identify whether the subject is NaCl material, a NaCl constituent or a product requiring its own model.",
                                        "questions": [
                                            {
                                                "text": "Is this record about sodium chloride material, NaCl dissolved in a solvent, a formulated salt product or a halite occurrence?",
                                                "kind": "boundary",
                                                "id": "represented-material-q01"
                                            },
                                            {
                                                "text": "Which additives, other salts or host materials require a linked mixture, product or geological model?",
                                                "kind": "boundary",
                                                "id": "represented-material-q02"
                                            }
                                        ]
                                    }
                                ]
                            }
                        ]
                    },
                    {
                        "id": "purity-grade-and-lot-evidence",
                        "name": "Purity, grade and lot evidence",
                        "description": "Captures the composition and documentation that make a particular NaCl lot suitable or unsuitable for use.",
                        "rationale": "The NaCl formula does not establish food, analytical or pharmaceutical suitability.",
                        "layers": [
                            {
                                "id": "assay-and-constituents",
                                "name": "Assay and constituents",
                                "description": "Records NaCl content alongside moisture, impurities and intentional additions.",
                                "findings": [
                                    {
                                        "id": "composition-basis",
                                        "name": "Composition and reporting basis",
                                        "description": "Make assay results interpretable by recording methods, reporting bases and constituents not resolved by the assay.",
                                        "questions": [
                                            {
                                                "text": "What is the NaCl mass fraction, and is it reported on a dry or as-received basis using which method?",
                                                "kind": "measurement",
                                                "id": "composition-basis-q01"
                                            },
                                            {
                                                "text": "What water, other salts, insoluble matter and intentional additives are present, with what detection limits?",
                                                "kind": "measurement",
                                                "id": "composition-basis-q02"
                                            }
                                        ]
                                    }
                                ]
                            },
                            {
                                "id": "grade-conformity",
                                "name": "Grade conformity",
                                "description": "Links a grade claim to a specific specification and evidence for the supplied lot.",
                                "findings": [
                                    {
                                        "id": "supported-grade-claim",
                                        "name": "Supported grade claim",
                                        "description": "Treat grade as demonstrated conformity rather than a conclusion drawn from the substance name or assay alone.",
                                        "questions": [
                                            {
                                                "text": "Which specification and edition define the claimed sodium chloride grade, and which lot certificate supports it?",
                                                "kind": "provenance",
                                                "id": "supported-grade-claim-q01"
                                            },
                                            {
                                                "text": "Which requirements for the proposed use remain untested or unsupported by the supplier's evidence?",
                                                "kind": "action",
                                                "id": "supported-grade-claim-q02"
                                            }
                                        ]
                                    }
                                ]
                            }
                        ]
                    },
                    {
                        "id": "crystal-state-and-handling-condition",
                        "name": "Crystal state and handling condition",
                        "description": "Describes NaCl phase, crystal properties and the physical condition of bulk material.",
                        "rationale": "The same chemical composition can behave differently when finely divided, caked, wet or heated.",
                        "layers": [
                            {
                                "id": "phase-and-reference-properties",
                                "name": "Phase and reference properties",
                                "description": "Relates observed state to temperature, pressure and sourced physical properties.",
                                "findings": [
                                    {
                                        "id": "conditioned-phase-properties",
                                        "name": "Conditioned phase properties",
                                        "description": "Record physical constants with their conditions and distinguish reference data from measurements of the actual material.",
                                        "questions": [
                                            {
                                                "text": "What phase is the NaCl in at the recorded temperature and pressure?",
                                                "kind": "measurement",
                                                "id": "conditioned-phase-properties-q01"
                                            },
                                            {
                                                "text": "Which sources establish melting point, boiling point and crystal density, with units, conditions and uncertainty?",
                                                "kind": "provenance",
                                                "id": "conditioned-phase-properties-q02"
                                            }
                                        ]
                                    }
                                ]
                            },
                            {
                                "id": "particle-and-storage-condition",
                                "name": "Particle and storage condition",
                                "description": "Tracks characteristics relevant to bulk handling and changes during storage.",
                                "findings": [
                                    {
                                        "id": "flow-and-caking-evidence",
                                        "name": "Flow and caking evidence",
                                        "description": "Assess dispensing and dissolution implications from particle size, moisture, agglomeration and packaging history.",
                                        "questions": [
                                            {
                                                "text": "What particle-size distribution, bulk density and caking condition does this lot exhibit?",
                                                "kind": "measurement",
                                                "id": "flow-and-caking-evidence-q01"
                                            },
                                            {
                                                "text": "Does moisture exposure, packaging damage or contamination require drying, screening, retesting or rejection for the intended use?",
                                                "kind": "action",
                                                "id": "flow-and-caking-evidence-q02"
                                            }
                                        ]
                                    }
                                ]
                            }
                        ]
                    },
                    {
                        "id": "dissolution-and-use-fitness",
                        "name": "Dissolution and use fitness",
                        "description": "Supports decisions about using NaCl as a measured input while preserving the boundary with downstream mixtures and processes.",
                        "rationale": "Dissolving sodium chloride requires attention to purity, concentration basis and conditions; shared identity alone does not justify substitution.",
                        "layers": [
                            {
                                "id": "aqueous-transfer",
                                "name": "Aqueous transfer",
                                "description": "Captures information needed to transfer a known amount of NaCl into water.",
                                "findings": [
                                    {
                                        "id": "dissolution-basis",
                                        "name": "Dissolution basis",
                                        "description": "Separate equilibrium solubility, dissolution rate and target concentration when planning a preparation.",
                                        "questions": [
                                            {
                                                "text": "What verified NaCl solubility applies at the intended temperature and in the presence of any other dissolved constituents?",
                                                "kind": "measurement",
                                                "id": "dissolution-basis-q01"
                                            },
                                            {
                                                "text": "What material mass delivers the required NaCl amount after correcting for assay and moisture, and which model owns the resulting solution?",
                                                "kind": "action",
                                                "id": "dissolution-basis-q02"
                                            }
                                        ]
                                    }
                                ]
                            },
                            {
                                "id": "application-acceptance",
                                "name": "Application acceptance",
                                "description": "Evaluates the material against requirements of a named downstream use.",
                                "findings": [
                                    {
                                        "id": "use-specific-acceptance",
                                        "name": "Use-specific acceptance",
                                        "description": "Determine whether impurities, additives, particle form and conformity evidence permit a proposed application or substitution.",
                                        "questions": [
                                            {
                                                "text": "Which NaCl purity, additive, particle-size and documentation requirements apply to the intended application?",
                                                "kind": "boundary",
                                                "id": "use-specific-acceptance-q01"
                                            },
                                            {
                                                "text": "Can this lot replace the specified sodium chloride material without violating those requirements, and what evidence is missing?",
                                                "kind": "action",
                                                "id": "use-specific-acceptance-q02"
                                            }
                                        ]
                                    }
                                ]
                            }
                        ]
                    },
                    {
                        "id": "hazards-exposure-and-regulatory-context",
                        "name": "Hazards, exposure and regulatory context",
                        "description": "Connects handling decisions to the actual NaCl material, exposure conditions and applicable jurisdiction.",
                        "rationale": "Familiarity with table salt does not establish the handling requirements of every NaCl grade, physical form or application.",
                        "layers": [
                            {
                                "id": "classification-and-exposure",
                                "name": "Classification and exposure",
                                "description": "Records sourced hazard determinations and relevant exposure criteria without inventing a universal classification.",
                                "findings": [
                                    {
                                        "id": "applicable-hazard-evidence",
                                        "name": "Applicable hazard evidence",
                                        "description": "Distinguish substance classification, supplier product information and workplace exposure assessments.",
                                        "questions": [
                                            {
                                                "text": "What GHS classification or explicit non-classification is supported for this material under the applicable jurisdiction and current SDS?",
                                                "kind": "provenance",
                                                "id": "applicable-hazard-evidence-q01"
                                            },
                                            {
                                                "text": "Are any NaCl-specific or applicable particulate exposure limits established, and what routes, units and averaging periods do they cover?",
                                                "kind": "measurement",
                                                "id": "applicable-hazard-evidence-q02"
                                            }
                                        ]
                                    }
                                ]
                            },
                            {
                                "id": "handling-and-release-decisions",
                                "name": "Handling and release decisions",
                                "description": "Links material condition and intended activity to storage, exposure control and disposal requirements.",
                                "findings": [
                                    {
                                        "id": "contextual-controls",
                                        "name": "Contextual controls",
                                        "description": "Determine appropriate actions for dust, heated material, moisture ingress and releases using the actual operating context.",
                                        "questions": [
                                            {
                                                "text": "Which handling and storage controls follow from this lot's physical form, additives, temperature and expected exposure?",
                                                "kind": "action",
                                                "id": "contextual-controls-q01"
                                            },
                                            {
                                                "text": "What receiving-environment constraints and local requirements govern collection, reuse or disposal of spilled NaCl or resulting saltwater?",
                                                "kind": "action",
                                                "id": "contextual-controls-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 monograph editions, jurisdiction-specific GHS classification and applicable workplace exposure limits before regulatory use.",
                                            "Physical values are approximate for pure material; grade specifications require explicit purity, impurity, moisture and intended-use criteria."
                                        ],
                                        "questions": [
                                            {
                                                "id": "evidence-confidence-notes-q01",
                                                "text": "Which of these check these first hold for the sense of sodium chloride 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": [
                                            "Food-grade sodium chloride",
                                            "Pharmaceutical-grade sodium chloride",
                                            "Analytical-reagent-grade sodium chloride",
                                            "Industrial-grade sodium chloride"
                                        ],
                                        "questions": [
                                            {
                                                "id": "evidence-kinds-q01",
                                                "text": "Which of these kinds and varieties hold for the sense of sodium chloride 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": "7647-14-5",
                                                "note": "Identifies sodium chloride; does not specify grade, purity or formulation."
                                            },
                                            {
                                                "scheme": "PubChem CID",
                                                "value_or_pattern": "5234",
                                                "note": "Compound identifier for sodium chloride."
                                            },
                                            {
                                                "scheme": "EC number",
                                                "value_or_pattern": "231-598-3",
                                                "note": "European substance identifier."
                                            },
                                            {
                                                "scheme": "Chemical formula",
                                                "value_or_pattern": "NaCl",
                                                "note": "Expresses the ionic stoichiometry rather than a discrete molecule in the crystal."
                                            }
                                        ],
                                        "questions": [
                                            {
                                                "id": "evidence-identifiers-q01",
                                                "text": "Which of these identifiers and schemes hold for the sense of sodium chloride 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 States Pharmacopeia-National Formulary (USP-NF), published by USP, includes a Sodium Chloride monograph for pharmaceutical quality.",
                                            "European Pharmacopoeia, published by the European Directorate for the Quality of Medicines & HealthCare, includes a sodium chloride monograph.",
                                            "Codex Standard for Food Grade Salt (CXS 150-1985), issued by the Codex Alimentarius Commission, addresses food-grade salt."
                                        ],
                                        "questions": [
                                            {
                                                "id": "evidence-standards-and-regulation-q01",
                                                "text": "Which of these standards and regulation hold for the sense of sodium chloride 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": [
                                            "Food seasoning and preservation.",
                                            "Feedstock for chlor-alkali production of chlorine, sodium hydroxide and hydrogen.",
                                            "Road deicing through freezing-point depression.",
                                            "Regeneration of ion-exchange resins in water softeners.",
                                            "Preparation of pharmaceutical saline solutions using suitable purity and controlled manufacturing."
                                        ],
                                        "questions": [
                                            {
                                                "id": "evidence-real-world-use-q01",
                                                "text": "Which of these real-world use hold for the sense of sodium chloride 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": "58.44",
                                                "unit": "g/mol"
                                            },
                                            {
                                                "quantity": "Melting point near atmospheric pressure",
                                                "typical_range": "Approximately 801",
                                                "unit": "°C"
                                            },
                                            {
                                                "quantity": "Boiling point at atmospheric pressure",
                                                "typical_range": "Approximately 1465",
                                                "unit": "°C"
                                            },
                                            {
                                                "quantity": "Crystal density near room temperature",
                                                "typical_range": "Approximately 2.16",
                                                "unit": "g/cm³"
                                            },
                                            {
                                                "quantity": "Solubility in water at 20 °C",
                                                "typical_range": "Approximately 35.9",
                                                "unit": "g NaCl per 100 g water"
                                            }
                                        ],
                                        "questions": [
                                            {
                                                "id": "evidence-measurements-q01",
                                                "text": "Which of these typical measurements hold for the sense of sodium chloride 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": [
                                            "Dust or concentrated solutions can irritate eyes.",
                                            "Excessive ingestion can disturb sodium and water balance.",
                                            "Chloride-containing solutions can accelerate metal corrosion, including pitting of susceptible alloys.",
                                            "Environmental releases can increase freshwater and soil salinity.",
                                            "Moisture exposure and impurities can cause caking; unsuitable purity or contamination can make a grade unfit for food or pharmaceutical use."
                                        ],
                                        "questions": [
                                            {
                                                "id": "evidence-failure-modes-and-hazards-q01",
                                                "text": "Which of these failure modes and hazards hold for the sense of sodium chloride 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": [
                                            "Food-salt iodization requirements and permitted additives vary by jurisdiction; these concern the formulated product rather than pure NaCl.",
                                            "Pharmaceutical quality requirements depend on the applicable pharmacopoeia and intended use.",
                                            "Restrictions on road-salt application and saline discharge vary with local environmental rules."
                                        ],
                                        "questions": [
                                            {
                                                "id": "evidence-regional-variation-q01",
                                                "text": "Which of these regional variation hold for the sense of sodium chloride 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": "Halite",
                                                "difference": "Halite is the naturally occurring mineral form of NaCl; sodium chloride identifies the chemical substance regardless of origin."
                                            },
                                            {
                                                "name": "Table salt",
                                                "difference": "Table salt is a food product predominantly containing sodium chloride and may also contain iodine compounds or anticaking agents."
                                            },
                                            {
                                                "name": "Sodium chloride solution",
                                                "difference": "A solution contains water and dissolved ions at a specified concentration, rather than the pure substance."
                                            },
                                            {
                                                "name": "Potassium chloride",
                                                "difference": "Potassium chloride contains potassium instead of sodium and has the formula KCl."
                                            },
                                            {
                                                "name": "Salt",
                                                "difference": "In chemistry, salt denotes a broad class of ionic compounds; sodium chloride is one member."
                                            }
                                        ],
                                        "questions": [
                                            {
                                                "id": "evidence-neighbours-q01",
                                                "text": "Which of these neighbouring kinds and how to tell them apart hold for the sense of sodium chloride this model covers, and on what evidence?",
                                                "kind": "provenance"
                                            }
                                        ]
                                    }
                                ]
                            }
                        ]
                    }
                ]
            },
            "openQuestions": [
                "Which authoritative identity records and existing Vercy world models should anchor this entry without duplicating an already covered concept?",
                "Which reference sources and measurement conditions should establish NaCl melting point, boiling point, density and aqueous solubility?",
                "Which grade specifications and impurity limits are needed for the intended users, and how should differing assay methods be compared?",
                "Which jurisdictions and workplace contexts must be researched for hazard classification, exposure limits and disposal requirements?",
                "Where should the catalogue draw the practical boundary between NaCl with incidental impurities, additive-containing salt products and natural halite material?"
            ],
            "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 sodium chloride, record what state it is in, and decide what may be done with it.",
            "whatItIs": "Enable an agent to recognise sodium chloride, assess a particular material's composition and condition, and determine its suitability for a specified use.",
            "characteristics": {
                "substance": "material",
                "origin": "natural",
                "agency": "inert",
                "mobility": "varies"
            },
            "whatYouCanDoWithIt": [
                "observed and measured",
                "consumed or used up"
            ],
            "distinguishingFeatures": [
                "Described in 84 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 sodium chloride, 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 84 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 sodium chloride from another, and a sodium chloride 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 sodium chloride, 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 sodium chloride, 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 sodium chloride 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 sodium chloride, 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 sodium chloride, 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 sodium chloride 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 sodium chloride 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 sodium chloride, 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 sodium chloride, 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 sodium chloride 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 sodium chloride from the things most often confused with it.",
                                        "questions": [
                                            {
                                                "id": "distinguishing-features-q01",
                                                "text": "What identifies and describes what distinguishes a sodium chloride, 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 sodium chloride, 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 sodium chloride 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 sodium chloride 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 sodium chloride, 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 sodium chloride, 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 sodium chloride 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 sodium chloride is built from and which parts are replaceable.",
                                        "questions": [
                                            {
                                                "id": "parts-and-materials-q01",
                                                "text": "What identifies and describes the composition of a sodium chloride, 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 sodium chloride, 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 sodium chloride 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 sodium chloride is judged and by whom.",
                                        "questions": [
                                            {
                                                "id": "condition-assessment-q01",
                                                "text": "What identifies and describes the condition of a sodium chloride, 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 sodium chloride, 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 sodium chloride 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 sodium chloride 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 sodium chloride is, and what that position is measured against.",
                                        "questions": [
                                            {
                                                "id": "position-and-frame-q01",
                                                "text": "What identifies and describes the location of a sodium chloride, 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 sodium chloride, 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 sodium chloride 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 sodium chloride 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 sodium chloride, 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 sodium chloride, 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 sodium chloride 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 sodium chloride 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 sodium chloride between them.",
                                        "questions": [
                                            {
                                                "id": "stages-and-transitions-q01",
                                                "text": "What identifies and describes the lifecycle of a sodium chloride, 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 sodium chloride, 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 sodium chloride 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 sodium chloride, how often and by whom.",
                                "findings": [
                                    {
                                        "id": "observation-record",
                                        "name": "Observation record",
                                        "description": "How an observation of a sodium chloride 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 sodium chloride, 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 sodium chloride, 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 sodium chloride 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 sodium chloride 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 sodium chloride is for, and what it is used for anyway.",
                                "findings": [
                                    {
                                        "id": "function-and-purpose",
                                        "name": "Function, purpose and misuse",
                                        "description": "The function a sodium chloride performs and the uses that fall outside it.",
                                        "questions": [
                                            {
                                                "id": "function-and-purpose-q01",
                                                "text": "What identifies and describes the use of a sodium chloride, 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 sodium chloride, 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 sodium chloride 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 sodium chloride.",
                                "findings": [
                                    {
                                        "id": "procedures-and-skills",
                                        "name": "Procedures, skills and required tools",
                                        "description": "What an agent needs before it can act on a sodium chloride at all.",
                                        "questions": [
                                            {
                                                "id": "procedures-and-skills-q01",
                                                "text": "What identifies and describes handling a sodium chloride, 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 sodium chloride, 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 sodium chloride 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 sodium chloride there is and how fast it goes.",
                                        "questions": [
                                            {
                                                "id": "consumption-and-stock-q01",
                                                "text": "What identifies and describes the supply of a sodium chloride, 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 sodium chloride, 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 sodium chloride 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 sodium chloride 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 sodium chloride 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 sodium chloride 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 sodium chloride 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 sodium chloride, 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 sodium chloride 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 sodium chloride 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 sodium chloride 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 sodium chloride, 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 sodium chloride 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 sodium chloride and how confident it is.",
                                        "questions": [
                                            {
                                                "id": "claim-provenance-q01",
                                                "text": "What identifies and describes a claim about a sodium chloride, 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 sodium chloride, 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 sodium chloride 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 sodium chloride is retired without being erased.",
                                        "questions": [
                                            {
                                                "id": "validity-and-supersession-q01",
                                                "text": "What identifies and describes the validity of a claim about a sodium chloride, 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 sodium chloride, 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 sodium chloride 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
            }
        }
    }
}