{
  "vercy": "1.0-draft",
  "publication": {
    "status": "research-draft",
    "adjudicationStatus": "unreviewed",
    "publishableCanonical": false,
    "generatedAt": "2026-09-13T14:49:35Z",
    "providers": [
      "Claude"
    ],
    "breadth": "written by Claude from model knowledge without web access - no source was read, every claim is a lead to verify",
    "pass": 2,
    "wave": 4,
    "engine": "claude",
    "enrichment": {
      "pass": 3,
      "engine": "claude",
      "producedAt": "2026-10-06T11:00:00Z",
      "ingestedAt": "2026-10-06T07:41:54+00:00",
      "fields": [
        "agent_conduct",
        "ethics",
        "owners"
      ]
    },
    "gate": {
      "passed": true,
      "version": "1.0",
      "at": "2026-10-06T19:52:00+00:00",
      "evidence": [
        "completeness 1.00",
        "sense: Wikidata description",
        "2 live sources",
        "review by codex: pass"
      ]
    }
  },
  "metaModel": {
    "id": "THING-Q43648",
    "registryId": "vr.tr.hydrocarbon",
    "name": "hydrocarbon",
    "version": "0.2.0-wave.4",
    "entryKind": "thing",
    "family": "Thing Registry",
    "domain": [
      "PHY.MAT"
    ],
    "status": "research-draft"
  },
  "canonicalUrl": "https://ver.cy/models/thing/q43648/",
  "model": {
    "registry_id": "vr.tr.hydrocarbon",
    "name": "hydrocarbon",
    "purpose": "Let an agent explain hydrocarbons and their classes, relay properties, sources and uses from chemistry references, describe their role as fuels and feedstocks, and distinguish hydrocarbons from other organic compounds, from petroleum as a mixture and from carbohydrates.",
    "definition": "An organic compound consisting entirely of hydrogen and carbon, from methane and the alkanes through alkenes, alkynes and aromatic compounds such as benzene to large polymers, forming the main constituents of natural gas, petroleum and coal-derived fuels and the feedstock of the petrochemical industry; hydrocarbons are classified by bonding and structure and are studied in organic chemistry.",
    "what_it_is_for": "Not applicable; a class of compounds.",
    "affordances": [
      "explain classes",
      "relay properties and uses",
      "describe environmental aspects",
      "distinguish related concepts"
    ],
    "distinguishing_features": [
      "Carbon and hydrogen only",
      "Classified by bonding",
      "Fuel and feedstock",
      "Nonpolar"
    ],
    "appearance": "Gases, liquids or waxy solids, mostly colourless.",
    "visual_identification": [
      "Compound of carbon and hydrogen only",
      "Alkanes, alkenes, alkynes, aromatics, polymers such as polyethylene",
      "Other organic compounds contain heteroatoms; petroleum is a mixture; carbohydrates contain oxygen"
    ],
    "physical_properties": [
      {
        "quantity": "simplest",
        "typical_range": "methane, CH4",
        "unit": "note",
        "note": ""
      },
      {
        "quantity": "boiling points",
        "typical_range": "rise with chain length",
        "unit": "note",
        "note": ""
      },
      {
        "quantity": "combustion products",
        "typical_range": "carbon dioxide and water",
        "unit": "note",
        "note": "complete"
      }
    ],
    "families_and_kinds": [
      "alkanes",
      "alkenes and alkynes",
      "cycloalkanes",
      "aromatic hydrocarbons",
      "polycyclic aromatic hydrocarbons",
      "hydrocarbon polymers"
    ],
    "related_models": [
      {
        "relation": "is a kind of",
        "target": "organic compound",
        "why": "in registry terms"
      },
      {
        "relation": "is a kind of",
        "target": "binary compound",
        "why": "in registry terms"
      },
      {
        "relation": "is the main constituent of",
        "target": "petroleum",
        "why": "and natural gas"
      },
      {
        "relation": "is exemplified by",
        "target": "methane",
        "why": "the simplest"
      }
    ],
    "identifiers": [
      {
        "scheme": "MeSH",
        "value_or_pattern": "D006838",
        "note": "Hydrocarbons"
      }
    ],
    "standards_and_regulation": [
      "IUPAC nomenclature",
      "Air quality and emissions regulations for volatile hydrocarbons",
      "Fuel standards"
    ],
    "failure_modes_and_hazards": [
      "Flammability and explosion",
      "Toxicity of aromatics such as benzene",
      "Climate impact of combustion and methane leaks"
    ],
    "in_scope": [],
    "out_of_scope": [],
    "characteristics": [],
    "agent_conduct": {
      "may": [
        "Identify and classify a hydrocarbon by its bonding and structure.",
        "Relay flammability, exposure and environmental data from published safety and emissions sources.",
        "Monitor leaks, vapour levels and emissions for a facility that authorized it."
      ],
      "must_not": [
        "Suppress or understate a detected leak or an exposure measurement.",
        "Ignore ignition sources in an area it controls where flammable vapour may be present.",
        "Downplay the health risk of aromatics such as benzene in worker guidance.",
        "Present combustion emissions figures without their basis and date."
      ],
      "requires_human": [
        "Shutting down, venting or restarting a process that handles hydrocarbons.",
        "Reporting an emission or leak to a regulator."
      ]
    },
    "ethics": {
      "considerations": [
        "Leaks and fires kill workers and neighbours, and benzene exposure causes cancer.",
        "Combustion and methane leaks drive climate change, which harms people far from the source."
      ],
      "affected_parties": [
        "Workers at facilities",
        "Communities near plants and pipelines",
        "People affected by climate change"
      ]
    },
    "owners": {
      "steward": "The operator of each facility or stock; environmental and safety regulators oversee them.",
      "master_systems": [
        "Emissions inventories",
        "Chemical safety data sheets"
      ]
    }
  },
  "sources": [
    {
      "id": "wikidata",
      "title": "Wikidata item Q43648: hydrocarbon",
      "url": "https://www.wikidata.org/wiki/Q43648",
      "url_status": "live",
      "what_it_supports": "identity and sense of the item",
      "checked_by": "wikidata-api"
    },
    {
      "id": "wikipedia-en",
      "title": "Wikipedia: Hydrocarbon",
      "url": "https://en.wikipedia.org/wiki/Hydrocarbon",
      "url_status": "live",
      "what_it_supports": "general description of the item",
      "checked_by": "wikidata-api sitelink"
    }
  ],
  "structure": {
    "bundles": [
      {
        "id": "understand",
        "name": "Understand",
        "description": "What a hydrocarbon is.",
        "rationale": "Science.",
        "layers": [
          {
            "id": "definition",
            "name": "Definition",
            "description": "Definition.",
            "findings": [
              {
                "id": "definition-finding",
                "name": "Definition",
                "description": "Definition.",
                "questions": [
                  {
                    "text": "What is a hydrocarbon, and how does it differ from other organic compounds, petroleum and carbohydrates?",
                    "kind": "definition"
                  },
                  {
                    "text": "Is the question about chemistry, fuels, environment or a specific compound?",
                    "kind": "boundary"
                  }
                ]
              }
            ]
          },
          {
            "id": "classes",
            "name": "Classes",
            "description": "Classes.",
            "findings": [
              {
                "id": "classes-finding",
                "name": "Classes",
                "description": "Classes.",
                "questions": [
                  {
                    "text": "What are alkanes, alkenes, alkynes, cycloalkanes and aromatics?",
                    "kind": "definition"
                  },
                  {
                    "text": "Which entry fits the specific class?",
                    "kind": "action"
                  }
                ]
              }
            ]
          }
        ]
      },
      {
        "id": "chemistry",
        "name": "Chemistry",
        "description": "Chemistry.",
        "rationale": "Science.",
        "layers": [
          {
            "id": "properties",
            "name": "Properties",
            "description": "Properties.",
            "findings": [
              {
                "id": "properties-finding",
                "name": "Properties",
                "description": "Properties.",
                "questions": [
                  {
                    "text": "How do structure and bonding determine boiling point, reactivity and solubility?",
                    "kind": "provenance"
                  },
                  {
                    "text": "Which references are standard?",
                    "kind": "provenance"
                  }
                ]
              }
            ]
          },
          {
            "id": "reactions",
            "name": "Reactions",
            "description": "Reactions.",
            "findings": [
              {
                "id": "reactions-finding",
                "name": "Reactions",
                "description": "Reactions.",
                "questions": [
                  {
                    "text": "What are combustion, substitution, addition and cracking reactions?",
                    "kind": "provenance"
                  },
                  {
                    "text": "Which sources are cited?",
                    "kind": "provenance"
                  }
                ]
              }
            ]
          }
        ]
      },
      {
        "id": "industry",
        "name": "Industry",
        "description": "Industry and environment.",
        "rationale": "Application.",
        "layers": [
          {
            "id": "fuels",
            "name": "Fuels",
            "description": "Fuels and feedstocks.",
            "findings": [
              {
                "id": "fuels-finding",
                "name": "Fuels",
                "description": "Fuels.",
                "questions": [
                  {
                    "text": "How are hydrocarbons used as fuels and petrochemical feedstocks?",
                    "kind": "provenance"
                  },
                  {
                    "text": "Which entry fits petrochemical industry?",
                    "kind": "action"
                  }
                ]
              }
            ]
          },
          {
            "id": "environment",
            "name": "Environment",
            "description": "Environment.",
            "findings": [
              {
                "id": "environment-finding",
                "name": "Environment",
                "description": "Environment.",
                "questions": [
                  {
                    "text": "What are the health and climate impacts of hydrocarbons, as regulators and scientists report?",
                    "kind": "provenance"
                  },
                  {
                    "text": "Which entry fits air pollution?",
                    "kind": "action"
                  }
                ]
              }
            ]
          }
        ]
      },
      {
        "id": "context",
        "name": "Context",
        "description": "Beyond Earth and history.",
        "rationale": "Context.",
        "layers": [
          {
            "id": "space",
            "name": "Space",
            "description": "Space.",
            "findings": [
              {
                "id": "space-finding",
                "name": "Space",
                "description": "Space.",
                "questions": [
                  {
                    "text": "Where do hydrocarbons occur beyond Earth, such as on Titan?",
                    "kind": "provenance"
                  },
                  {
                    "text": "Which entry fits astrochemistry?",
                    "kind": "action"
                  }
                ]
              }
            ]
          },
          {
            "id": "history",
            "name": "History",
            "description": "History.",
            "findings": [
              {
                "id": "history-finding",
                "name": "History",
                "description": "History.",
                "questions": [
                  {
                    "text": "How did hydrocarbon chemistry develop?",
                    "kind": "provenance"
                  },
                  {
                    "text": "Which entry fits the history of organic chemistry?",
                    "kind": "action"
                  }
                ]
              }
            ]
          }
        ]
      }
    ]
  },
  "openQuestions": [
    "Should alkane and aromatic hydrocarbon be separate primary entries?",
    "How should chemistry references be linked?",
    "How should the fuel role be linked to energy entries?"
  ],
  "statistics": {
    "bundles": 4,
    "layers": 8,
    "findings": 8,
    "questions": 16
  }
}