{
    "model": {
        "rank": 4315,
        "code": "thing-q212254",
        "model_id": "vr.tr.compost",
        "name": "compost",
        "purpose": "Enable an agent to recognise compost, assess a particular lot's condition and suitability, and decide whether it needs further treatment or can be used for an intended purpose.",
        "family": "Thing Registry",
        "category": "Physical world and living systems",
        "status": "research-draft",
        "kind": "thing",
        "plane": "PHY",
        "domain": "PHY.MAT",
        "industry": "",
        "version": "",
        "url": "/models/thing/q212254/",
        "tier": 2,
        "score": 76,
        "payload": {
            "layer": "wikidata",
            "aliases": [
                "Composted bark",
                "John Innes compost",
                "Spent mushroom compost",
                "Tunkio",
                "leaf mold",
                "vermicompost"
            ],
            "aliasCount": 6,
            "merged": 6,
            "knownIn": 76,
            "facets": null,
            "markers": [],
            "lexicalClass": "",
            "senseRank": null,
            "alsoRegisteredAs": null,
            "source": {
                "dataset": "wikidata",
                "item": "Q212254",
                "url": "https://www.wikidata.org/wiki/Q212254",
                "license": "CC0 1.0"
            }
        },
        "research": {
            "vercy": "1.0-draft",
            "publication": {
                "status": "research-draft",
                "adjudicationStatus": "unreviewed",
                "publishableCanonical": false,
                "generatedAt": "2026-09-09T19:56:54Z",
                "providers": [
                    "Codex"
                ],
                "breadth": "recalled by Codex without web access - no source was read",
                "missingProviders": [],
                "pass": 2,
                "cost": {
                    "grok": {
                        "seconds": 24.8,
                        "error": "Reading additional input from stdin...\nOpenAI Codex v0.153.4\n--------\nworkdir: R:\\02_PROJECTS\\02_Meta_Models_Platforms\\Ver.cy\\current\\thing-registry-backlog\nmodel: gpt-6-astra\nprovider: openai\napproval: never\nsandbox: read-only\nreasoning effort: none\nreasoning summaries: none\nsession id: 01a087bd-99ba-79e2-b140-d8c470ede441\n--------\nuser\nDescribe what is already known about one registered thing. Answer as JSON only, no prose around it.\n\nThing: compost\nSense to describe: (none recorded)\nDomain code: PHY.MAT\nAlso known as: (none)\n\n\nContext for this batch of 695 things:\n# Batch 004: 1001 register",
                        "usd": 0,
                        "recall": true
                    },
                    "codex": {
                        "seconds": 69.7,
                        "error": "Reading additional input from stdin...\nOpenAI Codex v0.153.4\n--------\nworkdir: R:\\02_PROJECTS\\02_Meta_Models_Platforms\\Ver.cy\\current\\thing-registry-backlog\nmodel: gpt-6-astra\nprovider: openai\napproval: never\nsandbox: read-only\nreasoning effort: none\nreasoning summaries: none\nsession id: 01a087bd-99b5-7ad3-8e39-a6d9e059e852\n--------\nuser\nYou are drafting a Vercy meta-model for one registered thing. Answer as JSON only, no prose around it.\n\nThing: compost\nRegistry id: vr.tr.compost\nPlane / domain: PHY / PHY.MAT\nRegistry definition: (none recorded)\nNames folded into this entry: (none)\n\n\nContext "
                    }
                }
            },
            "metaModel": {
                "id": "THING-Q212254",
                "registryId": "vr.tr.compost",
                "name": "compost",
                "version": "0.1.0-research.1",
                "entryKind": "thing",
                "family": "Thing Registry",
                "domain": [
                    "PHY.MAT"
                ],
                "status": "research-draft"
            },
            "canonicalUrl": "https://ver.cy/models/thing/q212254/",
            "model": {
                "registry_id": "vr.tr.compost",
                "name": "compost",
                "purpose": "Enable an agent to recognise compost, assess a particular lot's condition and suitability, and decide whether it needs further treatment or can be used for an intended purpose.",
                "definition": "Compost is a biologically stabilized organic material produced by managed aerobic decomposition of biodegradable feedstocks and used principally to improve soil properties and supply some plant nutrients.",
                "scope_statement": "This model owns compost as a heterogeneous organic material resulting from managed aerobic biological decomposition, including its feedstock lineage, degree of stabilisation, composition, contaminants and suitability for use; it distinguishes the material from the composting process and from products containing compost.",
                "in_scope": [
                    "Identity and traceability of a compost lot, including feedstocks and additions",
                    "Material composition, physical condition and sampling basis",
                    "Stability, maturity and evidence of treatment effectiveness",
                    "Biological, chemical and physical contaminants",
                    "Suitability for specified uses and changes during storage"
                ],
                "out_of_scope": [
                    "Design and operation of composting facilities, equipment and collection systems",
                    "Undecomposed feedstocks as independently managed materials",
                    "Anaerobic digestate before any subsequent composting treatment",
                    "Soil, growing media and formulated products that contain compost",
                    "Whole-farm nutrient management and crop cultivation",
                    "Composting service organisations and their commercial operations"
                ],
                "distinguishing_features": [
                    "Establish whether the material has undergone managed aerobic biological decomposition, rather than being only shredded or mixed organic feedstock.",
                    "Distinguish compost from anaerobic digestate using treatment history; record subsequent composting when applicable.",
                    "Distinguish compost from naturally accumulated humus or leaf litter by its production provenance.",
                    "Distinguish a compost lot from soil or a formulated growing medium in which compost is one constituent.",
                    "Use documented stability and maturity assessments to distinguish material described as finished compost from material still requiring curing; appearance or an earthy smell alone does not establish readiness."
                ],
                "characteristics": [
                    {
                        "name": "Feedstock composition",
                        "kind": "relation",
                        "unit_or_values": "Feedstock types, origins and estimated proportions with wet-mass, dry-mass or volume basis",
                        "why_it_matters": "Feedstock history guides traceability, contaminant investigation and interpretation of composition."
                    },
                    {
                        "name": "Treatment and curing status",
                        "kind": "state",
                        "unit_or_values": "Under active treatment | curing | assessed as finished for a specified use | unknown; assessment date and basis",
                        "why_it_matters": "A material's label must be separated from evidence that it is ready for use."
                    },
                    {
                        "name": "Moisture content",
                        "kind": "measurement",
                        "unit_or_values": "Percent by mass, stating wet or dry basis and test method",
                        "why_it_matters": "Moisture affects handling, storage behaviour and conversion between delivered mass and dry-matter quantities."
                    },
                    {
                        "name": "Particle-size distribution",
                        "kind": "measurement",
                        "unit_or_values": "Mass percent passing specified sieve apertures in mm; sample preparation stated",
                        "why_it_matters": "Texture and coarse fractions affect spreading, blending and suitability for particular uses."
                    },
                    {
                        "name": "Organic matter and carbon-to-nitrogen ratio",
                        "kind": "measurement",
                        "unit_or_values": "Organic matter as percent dry mass; C:N as a dimensionless mass ratio with analytical definitions",
                        "why_it_matters": "These measurements describe composition but should not independently establish maturity or nutrient availability."
                    },
                    {
                        "name": "pH and electrical conductivity",
                        "kind": "measurement",
                        "unit_or_values": "pH and electrical conductivity in dS/m, with extraction method, dilution and temperature",
                        "why_it_matters": "Acidity and soluble salts can constrain plant compatibility and blending proportions."
                    },
                    {
                        "name": "Nutrient composition",
                        "kind": "measurement",
                        "unit_or_values": "Total and separately measured extractable nutrient concentrations in g/kg dry matter; analytes and methods stated",
                        "why_it_matters": "Total nutrient content and potentially available nutrients support different use decisions."
                    },
                    {
                        "name": "Biological stability",
                        "kind": "measurement",
                        "unit_or_values": "Respiration or self-heating test result, method-specific units, conditions and interpretation",
                        "why_it_matters": "Residual biological activity informs whether further curing or storage controls are needed."
                    },
                    {
                        "name": "Plant-response assessment",
                        "kind": "measurement",
                        "unit_or_values": "Germination or growth response relative to a control, with species, mixture proportion and protocol",
                        "why_it_matters": "Suitability for plant contact depends on the tested use conditions."
                    },
                    {
                        "name": "Contaminant profile",
                        "kind": "measurement",
                        "unit_or_values": "Analyte-specific chemical concentrations, biological counts or presence results, and physical impurity fractions; detection limits and methods",
                        "why_it_matters": "Contaminant evidence can restrict use even when the material appears mature."
                    },
                    {
                        "name": "Applicable material designation",
                        "kind": "category",
                        "unit_or_values": "Jurisdiction-specific waste, product or quality designation with documentary evidence; unresolved where unknown",
                        "why_it_matters": "The applicable designation and intended use determine which acceptance requirements need checking."
                    }
                ],
                "affordances": [
                    "Trace a compost lot to its feedstocks, treatment records and representative test results.",
                    "Request targeted sampling and testing when readiness or contamination evidence is incomplete.",
                    "Route a lot for further curing, screening or reassessment based on its condition.",
                    "Compare a lot with the documented requirements of an intended application.",
                    "Calculate delivered dry matter and nutrient quantities from a proposed application mass.",
                    "Flag a lot for restricted use or investigation when contamination, storage changes or missing evidence undermine suitability."
                ]
            },
            "sources": [],
            "structure": {
                "bundles": [
                    {
                        "id": "compost-identity-and-lineage",
                        "name": "Compost identity and lineage",
                        "description": "Establishes which material is being assessed and how its organic inputs became the identified compost lot.",
                        "rationale": "Compost is a variable mixture whose identity depends on provenance and lot boundaries, rather than a single molecular formula.",
                        "layers": [
                            {
                                "id": "material-boundary",
                                "name": "Material boundary",
                                "description": "Separates compost from feedstocks, digestate and mixtures containing compost.",
                                "findings": [
                                    {
                                        "id": "basis-for-compost-identity",
                                        "name": "Basis for compost identity",
                                        "description": "Record the evidence supporting identification as compost and any ambiguity about treatment stage or mixture identity.",
                                        "questions": [
                                            {
                                                "text": "What treatment history supports calling this material compost?",
                                                "kind": "definition",
                                                "id": "basis-for-compost-identity-q01"
                                            },
                                            {
                                                "text": "Is the assessed material compost itself, material still undergoing composting, or a formulated mixture containing compost?",
                                                "kind": "boundary",
                                                "id": "basis-for-compost-identity-q02"
                                            }
                                        ]
                                    }
                                ]
                            },
                            {
                                "id": "feedstocks-and-lot-history",
                                "name": "Feedstocks and lot history",
                                "description": "Connects a bounded lot to its inputs, additions and material movements.",
                                "findings": [
                                    {
                                        "id": "traceable-compost-lot",
                                        "name": "Traceable compost lot",
                                        "description": "Record input origins and lot splits or combinations needed to interpret test results and investigate problems.",
                                        "questions": [
                                            {
                                                "text": "Which feedstocks and additions entered this lot, from which sources, and in what known or estimated proportions?",
                                                "kind": "provenance",
                                                "id": "traceable-compost-lot-q01"
                                            },
                                            {
                                                "text": "Which production dates, stockpile boundaries, splits and combinations define the material covered by this lot's records?",
                                                "kind": "boundary",
                                                "id": "traceable-compost-lot-q02"
                                            }
                                        ]
                                    }
                                ]
                            }
                        ]
                    },
                    {
                        "id": "stability-maturity-and-treatment-evidence",
                        "name": "Stability, maturity and treatment evidence",
                        "description": "Organises evidence about residual decomposition, plant response and treatment of biological hazards.",
                        "rationale": "Stability, maturity and treatment effectiveness answer different questions and must not be collapsed into one finished-compost label.",
                        "layers": [
                            {
                                "id": "stability-and-plant-response",
                                "name": "Stability and plant response",
                                "description": "Assesses residual biological activity and readiness for a specified plant-related use.",
                                "findings": [
                                    {
                                        "id": "readiness-assessment",
                                        "name": "Readiness assessment",
                                        "description": "Keep stability tests and plant-response assessments distinct, including their methods, dates and use-specific interpretations.",
                                        "questions": [
                                            {
                                                "text": "What respiration or self-heating result describes this lot's residual biological activity, under which test conditions?",
                                                "kind": "measurement",
                                                "id": "readiness-assessment-q01"
                                            },
                                            {
                                                "text": "What plant-response evidence supports readiness at the proposed compost proportion and for the intended plant or application?",
                                                "kind": "measurement",
                                                "id": "readiness-assessment-q02"
                                            },
                                            {
                                                "text": "What evidence would trigger additional curing and retesting?",
                                                "kind": "action",
                                                "id": "readiness-assessment-q03"
                                            }
                                        ]
                                    }
                                ]
                            },
                            {
                                "id": "biological-treatment-evidence",
                                "name": "Biological treatment evidence",
                                "description": "Links the material to records and tests relevant to pathogens and viable propagules.",
                                "findings": [
                                    {
                                        "id": "treatment-coverage-and-verification",
                                        "name": "Treatment coverage and verification",
                                        "description": "Record evidence of treatment coverage and verification without treating maturity as proof of biological safety.",
                                        "questions": [
                                            {
                                                "text": "Which time-temperature and material-movement records support treatment coverage for this lot?",
                                                "kind": "provenance",
                                                "id": "treatment-coverage-and-verification-q01"
                                            },
                                            {
                                                "text": "Which pathogen indicators or viable weed-seed and plant-propagule tests were performed, and what were their results and sampling limits?",
                                                "kind": "measurement",
                                                "id": "treatment-coverage-and-verification-q02"
                                            }
                                        ]
                                    }
                                ]
                            }
                        ]
                    },
                    {
                        "id": "compost-composition-and-measurement",
                        "name": "Compost composition and measurement",
                        "description": "Describes the physical and chemical properties of a heterogeneous compost lot with an explicit measurement basis.",
                        "rationale": "Moisture, sampling and analytical methods can change the meaning of compost measurements and application calculations.",
                        "layers": [
                            {
                                "id": "representative-physical-characterisation",
                                "name": "Representative physical characterisation",
                                "description": "Relates moisture, particle size and bulk density to sampling and handling conditions.",
                                "findings": [
                                    {
                                        "id": "sample-and-delivered-material",
                                        "name": "Sample and delivered material",
                                        "description": "Record whether measured physical properties represent the lot and its condition at delivery.",
                                        "questions": [
                                            {
                                                "text": "How were increments taken across the lot and combined to account for coarse particles and moisture variation?",
                                                "kind": "measurement",
                                                "id": "sample-and-delivered-material-q01"
                                            },
                                            {
                                                "text": "What are the moisture content, particle-size distribution and bulk density, with their measurement methods and material condition?",
                                                "kind": "measurement",
                                                "id": "sample-and-delivered-material-q02"
                                            }
                                        ]
                                    }
                                ]
                            },
                            {
                                "id": "organic-and-chemical-composition",
                                "name": "Organic and chemical composition",
                                "description": "Records organic matter, nutrients, acidity and soluble salts without assigning universal constants to compost.",
                                "findings": [
                                    {
                                        "id": "interpretable-composition-results",
                                        "name": "Interpretable composition results",
                                        "description": "Keep analytical definitions and mass bases attached to results used for blending or application decisions.",
                                        "questions": [
                                            {
                                                "text": "What organic matter, carbon, nitrogen and other nutrient results are available, and do they represent total or method-defined extractable fractions?",
                                                "kind": "measurement",
                                                "id": "interpretable-composition-results-q01"
                                            },
                                            {
                                                "text": "What pH and electrical conductivity were measured, using which extraction ratio and test conditions?",
                                                "kind": "measurement",
                                                "id": "interpretable-composition-results-q02"
                                            },
                                            {
                                                "text": "How should the reported concentrations be converted to quantities in the proposed delivered mass?",
                                                "kind": "action",
                                                "id": "interpretable-composition-results-q03"
                                            }
                                        ]
                                    }
                                ]
                            }
                        ]
                    },
                    {
                        "id": "contaminants-and-acceptance",
                        "name": "Contaminants and acceptance",
                        "description": "Connects feedstock-related contamination concerns and measured impurities to applicable acceptance requirements.",
                        "rationale": "A mature compost lot can still be unsuitable because of contaminants, physical debris or unmet use requirements.",
                        "layers": [
                            {
                                "id": "chemical-and-physical-contaminants",
                                "name": "Chemical and physical contaminants",
                                "description": "Targets investigation using feedstock history, observations and analytical evidence.",
                                "findings": [
                                    {
                                        "id": "contamination-evidence",
                                        "name": "Contamination evidence",
                                        "description": "Record relevant chemical residues and physical impurities, distinguishing untested substances from non-detect results.",
                                        "questions": [
                                            {
                                                "text": "Which feedstock histories justify testing for metals, persistent herbicide residues, PFAS or other specified contaminants?",
                                                "kind": "provenance",
                                                "id": "contamination-evidence-q01"
                                            },
                                            {
                                                "text": "What chemical results and physical impurity measurements exist, including detection limits, fragment sizes and glass, metal or plastic fractions?",
                                                "kind": "measurement",
                                                "id": "contamination-evidence-q02"
                                            }
                                        ]
                                    }
                                ]
                            },
                            {
                                "id": "use-specific-acceptance",
                                "name": "Use-specific acceptance",
                                "description": "Maps the lot to the requirements relevant to its jurisdiction, designation and destination.",
                                "findings": [
                                    {
                                        "id": "documented-acceptance-decision",
                                        "name": "Documented acceptance decision",
                                        "description": "Record the exact basis for accepting, restricting or leaving unresolved a proposed use.",
                                        "questions": [
                                            {
                                                "text": "Which current jurisdictional requirements, quality specifications or buyer criteria apply to this compost and proposed use?",
                                                "kind": "boundary",
                                                "id": "documented-acceptance-decision-q01"
                                            },
                                            {
                                                "text": "Does this lot's evidence satisfy those criteria, and which missing results or exceedances prevent acceptance?",
                                                "kind": "action",
                                                "id": "documented-acceptance-decision-q02"
                                            }
                                        ]
                                    }
                                ]
                            }
                        ]
                    },
                    {
                        "id": "application-and-storage-fitness",
                        "name": "Application and storage fitness",
                        "description": "Relates measured compost properties to intended applications and tracks changes after assessment.",
                        "rationale": "Suitability depends on application conditions, while storage can make earlier measurements less representative.",
                        "layers": [
                            {
                                "id": "application-fit",
                                "name": "Application fit",
                                "description": "Evaluates compost for soil amendment, surface application or inclusion in a growing-medium blend.",
                                "findings": [
                                    {
                                        "id": "application-constraints",
                                        "name": "Application constraints",
                                        "description": "Identify the receiving context and compost properties that constrain the proposed amount or mixture proportion.",
                                        "questions": [
                                            {
                                                "text": "What receiving soil, plant sensitivity, placement and compost proportion define the intended application?",
                                                "kind": "boundary",
                                                "id": "application-constraints-q01"
                                            },
                                            {
                                                "text": "How do the lot's salts, nutrient composition, particle size and maturity evidence constrain the proposed use?",
                                                "kind": "action",
                                                "id": "application-constraints-q02"
                                            }
                                        ]
                                    }
                                ]
                            },
                            {
                                "id": "storage-and-reassessment",
                                "name": "Storage and reassessment",
                                "description": "Tracks material changes between testing and use.",
                                "findings": [
                                    {
                                        "id": "continued-validity-of-assessment",
                                        "name": "Continued validity of assessment",
                                        "description": "Record storage observations and events that could invalidate earlier readiness or contamination conclusions.",
                                        "questions": [
                                            {
                                                "text": "Since sampling, has the lot experienced rewetting, renewed heating, unusual odour, contamination or mixing with other material?",
                                                "kind": "provenance",
                                                "id": "continued-validity-of-assessment-q01"
                                            },
                                            {
                                                "text": "Which observed changes require resampling, further curing or a revised use decision before dispatch or application?",
                                                "kind": "action",
                                                "id": "continued-validity-of-assessment-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 describes the composted-material sense, not the broader horticultural use of 'compost' for growing media; no sources were consulted.",
                                            "Vermicompost and spent mushroom compost are established names, but their processing histories and eligibility under particular compost standards require checking.",
                                            "Verify regulatory scope, applicable editions and local quality limits; compost has no universal composition, purity, melting point or single chemical identifier, and the indicative measurement ranges are not acceptance criteria."
                                        ],
                                        "questions": [
                                            {
                                                "id": "evidence-confidence-notes-q01",
                                                "text": "Which of these check these first hold for the sense of compost 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": [
                                            "Green-waste compost",
                                            "Food-waste compost",
                                            "Manure compost",
                                            "Biosolids compost",
                                            "Vermicompost",
                                            "Spent mushroom compost"
                                        ],
                                        "questions": [
                                            {
                                                "id": "evidence-kinds-q01",
                                                "text": "Which of these kinds and varieties hold for the sense of compost 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": [
                                            "PAS 100, published by the British Standards Institution, specifies requirements for composted materials.",
                                            "Regulation (EU) 2019/1009, adopted by the European Parliament and Council, includes requirements for compost used in EU fertilising products.",
                                            "USDA National Organic Program regulations include feedstock and processing requirements for compost used in organic crop production.",
                                            "US EPA regulations at 40 CFR Part 503 apply to sewage sludge, including composted biosolids used or disposed of within their scope."
                                        ],
                                        "questions": [
                                            {
                                                "id": "evidence-standards-and-regulation-q01",
                                                "text": "Which of these standards and regulation hold for the sense of compost 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": [
                                            "Improving soil structure, water retention and organic matter content",
                                            "Supplying nutrients to agricultural and horticultural soils",
                                            "Serving as a component of formulated growing media",
                                            "Supporting vegetation establishment in land restoration",
                                            "Mulching and erosion control"
                                        ],
                                        "questions": [
                                            {
                                                "id": "evidence-real-world-use-q01",
                                                "text": "Which of these real-world use hold for the sense of compost 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": "Carbon-to-nitrogen mass ratio of finished compost",
                                                "typical_range": "Approximately 10-20; feedstock dependent and insufficient alone to establish maturity",
                                                "unit": "dimensionless"
                                            },
                                            {
                                                "quantity": "pH of finished compost",
                                                "typical_range": "Approximately 6-8.5; feedstock and extraction method dependent",
                                                "unit": "pH"
                                            },
                                            {
                                                "quantity": "Moisture content during active composting",
                                                "typical_range": "Approximately 40-60; an operating range rather than a finished-product specification",
                                                "unit": "% of wet mass"
                                            },
                                            {
                                                "quantity": "Temperature during the thermophilic composting stage",
                                                "typical_range": "Approximately 45-70; temperature alone does not demonstrate sanitation",
                                                "unit": "°C"
                                            }
                                        ],
                                        "questions": [
                                            {
                                                "id": "evidence-measurements-q01",
                                                "text": "Which of these typical measurements hold for the sense of compost 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": [
                                            "Immature or insufficiently stabilized compost can inhibit plant growth through organic acids, ammonia or continued microbial activity.",
                                            "High soluble-salt concentrations can damage salt-sensitive plants.",
                                            "Inadequate sanitation or subsequent contamination can leave pathogens and viable weed seeds.",
                                            "Feedstocks can introduce persistent herbicides, metals, plastics or other contaminants.",
                                            "Storage and handling can generate dust and bioaerosols; large biologically active piles can self-heat and occasionally ignite."
                                        ],
                                        "questions": [
                                            {
                                                "id": "evidence-failure-modes-and-hazards-q01",
                                                "text": "Which of these failure modes and hazards hold for the sense of compost 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": [
                                            "Permitted feedstocks and the conditions under which compost ceases to be legally classified as waste differ by jurisdiction.",
                                            "Limits and testing requirements for pathogens, metals and physical contaminants vary among jurisdictions and certification schemes.",
                                            "In British horticultural usage, 'compost' can also mean a formulated potting medium that need not consist of composted material."
                                        ],
                                        "questions": [
                                            {
                                                "id": "evidence-regional-variation-q01",
                                                "text": "Which of these regional variation hold for the sense of compost 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": "Composting",
                                                "difference": "Composting is the biological treatment process; compost is its material product."
                                            },
                                            {
                                                "name": "Digestate",
                                                "difference": "Digestate comes from anaerobic digestion and is not automatically compost, although it can undergo subsequent aerobic composting."
                                            },
                                            {
                                                "name": "Manure",
                                                "difference": "Manure originates as animal excreta, often with bedding; it becomes manure compost only after composting."
                                            },
                                            {
                                                "name": "Mulch",
                                                "difference": "Mulch is defined by its use as a surface covering; compost is defined by its production and material condition and can serve as mulch."
                                            },
                                            {
                                                "name": "Potting mix",
                                                "difference": "A potting mix is formulated to support container-grown plants and may contain compost alongside other components."
                                            },
                                            {
                                                "name": "Peat",
                                                "difference": "Peat accumulates through incomplete decomposition in waterlogged environments rather than managed aerobic composting."
                                            }
                                        ],
                                        "questions": [
                                            {
                                                "id": "evidence-neighbours-q01",
                                                "text": "Which of these neighbouring kinds and how to tell them apart hold for the sense of compost this model covers, and on what evidence?",
                                                "kind": "provenance"
                                            }
                                        ]
                                    }
                                ]
                            }
                        ]
                    }
                ]
            },
            "openQuestions": [
                "Does an existing Vercy world model already own compost, and how should this entry relate to models for organic amendments, digestate and vermicompost?",
                "Which operational definition should determine when partly decomposed material enters this model's scope and when it may be designated finished compost?",
                "Which stability and maturity methods are appropriate for the intended uses, and how comparable are their interpretations?",
                "Which jurisdiction, material designation and destination should determine acceptance requirements and the contaminant testing panel?",
                "What sampling frequency and reassessment triggers are adequate for heterogeneous lots that are stored, split or combined?"
            ],
            "statistics": {
                "bundles": 6,
                "layers": 11,
                "findings": 18,
                "questions": 30
            }
        },
        "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 compost, record what state it is in, and decide what may be done with it.",
            "whatItIs": "Enable an agent to recognise compost, assess a particular lot's condition and suitability, and decide whether it needs further treatment or can be used for an intended purpose.",
            "characteristics": {
                "substance": "material",
                "origin": "natural",
                "agency": "inert",
                "mobility": "varies"
            },
            "whatYouCanDoWithIt": [
                "observed and measured",
                "consumed or used up"
            ],
            "distinguishingFeatures": [
                "Names folded into this entry, which a task may need to split apart again: Composted bark, John Innes compost, Spent mushroom compost, Tunkio, leaf mold, vermicompost.",
                "6 finer distinctions are held as aliases rather than separate entries, because telling them apart needs a task that asks for it.",
                "Described in 76 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 compost, 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": [
                {
                    "relation": "covers",
                    "note": "Finer kinds folded into this entry because telling them apart needs a task that asks for it. Each is a model waiting to be split out when one does.",
                    "targets": [
                        "Composted bark",
                        "John Innes compost",
                        "Spent mushroom compost",
                        "Tunkio",
                        "leaf mold",
                        "vermicompost"
                    ]
                }
            ],
            "standing": "Described in 76 Wikipedia languages, which measures how widely it is written about rather than how important or how common it is. 6 finer distinctions are held inside this entry as names rather than as separate models.",
            "structure": {
                "bundles": [
                    {
                        "id": "identity-and-classification",
                        "name": "Identity, naming and classification",
                        "description": "How an agent tells one compost from another, and a compost 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 compost, 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 compost, 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 compost 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 compost, 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 compost, 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 compost 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 compost 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 compost, 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 compost, 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 compost 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 compost from the things most often confused with it.",
                                        "questions": [
                                            {
                                                "id": "distinguishing-features-q01",
                                                "text": "What identifies and describes what distinguishes a compost, 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 compost, 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 compost 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 compost 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 compost, 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 compost, 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 compost 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 compost is built from and which parts are replaceable.",
                                        "questions": [
                                            {
                                                "id": "parts-and-materials-q01",
                                                "text": "What identifies and describes the composition of a compost, 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 compost, 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 compost 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 compost is judged and by whom.",
                                        "questions": [
                                            {
                                                "id": "condition-assessment-q01",
                                                "text": "What identifies and describes the condition of a compost, 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 compost, 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 compost 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 compost 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 compost is, and what that position is measured against.",
                                        "questions": [
                                            {
                                                "id": "position-and-frame-q01",
                                                "text": "What identifies and describes the location of a compost, 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 compost, 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 compost 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 compost 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 compost, 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 compost, 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 compost 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 compost 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 compost between them.",
                                        "questions": [
                                            {
                                                "id": "stages-and-transitions-q01",
                                                "text": "What identifies and describes the lifecycle of a compost, 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 compost, 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 compost 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 compost, how often and by whom.",
                                "findings": [
                                    {
                                        "id": "observation-record",
                                        "name": "Observation record",
                                        "description": "How an observation of a compost 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 compost, 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 compost, 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 compost 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 compost 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 compost is for, and what it is used for anyway.",
                                "findings": [
                                    {
                                        "id": "function-and-purpose",
                                        "name": "Function, purpose and misuse",
                                        "description": "The function a compost performs and the uses that fall outside it.",
                                        "questions": [
                                            {
                                                "id": "function-and-purpose-q01",
                                                "text": "What identifies and describes the use of a compost, 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 compost, 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 compost 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 compost.",
                                "findings": [
                                    {
                                        "id": "procedures-and-skills",
                                        "name": "Procedures, skills and required tools",
                                        "description": "What an agent needs before it can act on a compost at all.",
                                        "questions": [
                                            {
                                                "id": "procedures-and-skills-q01",
                                                "text": "What identifies and describes handling a compost, 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 compost, 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 compost 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 compost there is and how fast it goes.",
                                        "questions": [
                                            {
                                                "id": "consumption-and-stock-q01",
                                                "text": "What identifies and describes the supply of a compost, 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 compost, 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 compost 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 compost 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 compost 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 compost 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 compost 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 compost, 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 compost 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 compost 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 compost 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 compost, 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 compost 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 compost and how confident it is.",
                                        "questions": [
                                            {
                                                "id": "claim-provenance-q01",
                                                "text": "What identifies and describes a claim about a compost, 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 compost, 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 compost 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 compost is retired without being erased.",
                                        "questions": [
                                            {
                                                "id": "validity-and-supersession-q01",
                                                "text": "What identifies and describes the validity of a claim about a compost, 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 compost, 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 compost 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
            }
        }
    }
}