{ "model": { "rank": 8016, "code": "thing-q230731", "model_id": "vr.tr.aromatic-hydrocarbon", "name": "aromatic hydrocarbon", "purpose": "Let an agent explain aromatic hydrocarbons and aromaticity, describe classes and properties, describe uses and health and environmental hazards from authorities, and support learning.", "family": "Thing Registry", "category": "Physical world and living systems", "status": "research-draft", "kind": "thing", "plane": "PHY", "domain": "PHY.MAT", "industry": "", "version": "", "url": "/models/thing/q230731/", "tier": 2, "score": 52, "payload": { "layer": "wikidata", "aliases": [ "petroleum resin", "polycyclic aromatic hydrocarbons", "helicene", "dibenz[a,h]anthracene", "Phenanthrenes (and derivatives)", "7,12-diphenylbenzo[k]fluoranthene", "1,2,3,4-tetrahydro-9,10-diphenylanthracene", "azulene", "phenacene", "phenanthrenoid", "tetraphenylene", "7,12-dimethylbenzanthracene", "circulene", "iptycene", "ovalene", "methylcholanthrene", "dibenzo(a,e)pyrene", "benzo[a]anthracene", "bicalicene", "benzofluoranthene", "benzo(b)fluorene", "superphenalene", "triphenylene", "benzo[a]pyrene", "picene", "acenaphthene", "acenaphthylene", "chrysene", "pyrene", "rubrene", "perylene", "acene", "indene", "fluoranthene", "cholanthrene", "naphthacenes", "heptahelicene", "hexahelicene", "biphenyl", "Tetraphenylene" ], "aliasCount": 79, "merged": 79, "knownIn": 52, "facets": null, "markers": [], "lexicalClass": "", "senseRank": null, "alsoRegisteredAs": null, "source": { "dataset": "wikidata", "item": "Q230731", "url": "https://www.wikidata.org/wiki/Q230731", "license": "CC0 1.0" } }, "research": { "vercy": "1.0-draft", "publication": { "status": "research-draft", "adjudicationStatus": "unreviewed", "publishableCanonical": false, "generatedAt": "2026-09-12T02:48:22Z", "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": 2, "engine": "claude" }, "metaModel": { "id": "THING-Q230731", "registryId": "vr.tr.aromatic-hydrocarbon", "name": "aromatic hydrocarbon", "version": "0.2.0-wave.2", "entryKind": "thing", "family": "Thing Registry", "domain": [ "PHY.MAT" ], "status": "research-draft" }, "canonicalUrl": "https://ver.cy/models/thing/q230731/", "model": { "registry_id": "vr.tr.aromatic-hydrocarbon", "name": "aromatic hydrocarbon", "purpose": "Let an agent explain aromatic hydrocarbons and aromaticity, describe classes and properties, describe uses and health and environmental hazards from authorities, and support learning.", "definition": "A hydrocarbon containing one or more aromatic rings, planar cyclic structures with delocalised electrons that confer special stability, including benzene and its derivatives, fused polycyclic aromatic hydrocarbons such as naphthalene, anthracene, phenanthrene and larger systems, helicenes and other non-planar variants, and petroleum resins; aromatic hydrocarbons occur in petroleum and coal tar, are feedstocks for plastics, dyes and drugs, and many polycyclic forms are carcinogenic pollutants formed by incomplete combustion.", "what_it_is_for": "Hydrocarbons with aromatic rings.", "affordances": [ "explain aromaticity", "describe classes", "describe uses and hazards", "support learning" ], "distinguishing_features": [ "Aromatic stability", "Planar rings", "Substitution reactions", "Carcinogenic polycyclics" ], "appearance": "Liquids or crystalline solids, often with characteristic odour.", "visual_identification": [ "Aromatic ring structure", "Benzene and polycyclic forms", "Alkanes and alkenes lack aromatic rings; heteroaromatics contain non-carbon ring atoms" ], "physical_properties": [], "families_and_kinds": [ "benzene and alkylbenzenes", "polycyclic aromatic hydrocarbons", "helicenes and non-planar aromatics", "petroleum resins", "aromatic hydrocarbons as pollutants" ], "related_models": [ { "relation": "is a kind of", "target": "aromatic compound", "why": "category" }, { "relation": "is a kind of", "target": "unsaturated hydrocarbon", "why": "category" }, { "relation": "is related to", "target": "carbon", "why": "the element forming the rings" }, { "relation": "is related to", "target": "pollution", "why": "polycyclic aromatic pollutants" } ], "identifiers": [], "standards_and_regulation": [ "Chemical nomenclature", "Occupational exposure limits for benzene and polycyclic aromatics", "Environmental limits in air, water and food" ], "failure_modes_and_hazards": [ "Benzene and polycyclic aromatic carcinogenicity", "Flammability", "Environmental persistence" ], "in_scope": [], "out_of_scope": [], "characteristics": [] }, "sources": [], "structure": { "bundles": [ { "id": "understand", "name": "Understand", "description": "What aromatic hydrocarbons are.", "rationale": "Chemistry.", "layers": [ { "id": "aromaticity", "name": "Aromaticity", "description": "Aromaticity.", "findings": [ { "id": "aromaticity-finding", "name": "Aromaticity", "description": "Aromaticity.", "questions": [ { "text": "What is aromaticity, and how do delocalised electrons and the Huckel rule explain stability?", "kind": "definition" }, { "text": "Which entry fits benzene?", "kind": "action" } ] } ] }, { "id": "classes", "name": "Classes", "description": "Classes.", "findings": [ { "id": "classes-finding", "name": "Classes", "description": "Classes.", "questions": [ { "text": "How do benzene derivatives, polycyclic aromatics, helicenes and resins differ?", "kind": "definition" }, { "text": "Which entry fits a specific compound?", "kind": "action" } ] } ] } ] }, { "id": "react", "name": "React", "description": "Reactions and sources.", "rationale": "Chemistry.", "layers": [ { "id": "reactions", "name": "Reactions", "description": "Reactions.", "findings": [ { "id": "reactions-finding", "name": "Reactions", "description": "Reactions.", "questions": [ { "text": "How do aromatic hydrocarbons undergo electrophilic substitution and other reactions?", "kind": "definition" }, { "text": "Which entry fits aromatic substitution?", "kind": "action" } ] } ] }, { "id": "sources", "name": "Sources", "description": "Sources and production.", "findings": [ { "id": "sources-finding", "name": "Sources", "description": "Sources.", "questions": [ { "text": "How are aromatic hydrocarbons obtained from petroleum and coal, and formed in combustion?", "kind": "provenance" }, { "text": "Which entry fits petrochemistry?", "kind": "action" } ] } ] } ] }, { "id": "use", "name": "Use", "description": "Uses and hazards.", "rationale": "Practice.", "layers": [ { "id": "uses", "name": "Uses", "description": "Uses.", "findings": [ { "id": "uses-finding", "name": "Uses", "description": "Uses.", "questions": [ { "text": "How are aromatic hydrocarbons used as feedstocks for plastics, dyes, drugs and materials?", "kind": "provenance" }, { "text": "Which entry fits a specific product?", "kind": "action" } ] } ] }, { "id": "hazards", "name": "Hazards", "description": "Health and environment.", "findings": [ { "id": "hazards-finding", "name": "Hazards", "description": "Hazards.", "questions": [ { "text": "What do health and environmental authorities say about benzene and polycyclic aromatic exposure and limits?", "kind": "provenance" }, { "text": "Is an exposure emergency present now?", "kind": "boundary" } ] } ] } ] }, { "id": "learn", "name": "Learn", "description": "History and teaching.", "rationale": "Education.", "layers": [ { "id": "history", "name": "History", "description": "History.", "findings": [ { "id": "history-finding", "name": "History", "description": "History.", "questions": [ { "text": "How were benzene and aromaticity discovered and explained?", "kind": "provenance" }, { "text": "Which references are standard?", "kind": "provenance" } ] } ] }, { "id": "teach", "name": "Teach", "description": "Teaching.", "findings": [ { "id": "teach-finding", "name": "Teach", "description": "Teaching.", "questions": [ { "text": "How can aromaticity be taught?", "kind": "action" }, { "text": "Which misconceptions arise?", "kind": "provenance" } ] } ] } ] } ] }, "openQuestions": [ "Should polycyclic aromatic hydrocarbons be a separate entry?", "How should exposure standards be linked?", "How should chemical databases be linked?" ], "statistics": { "bundles": 4, "layers": 8, "findings": 8, "questions": 16 } }, "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 aromatic hydrocarbon, record what state it is in, and decide what may be done with it.", "whatItIs": "Let an agent explain aromatic hydrocarbons and aromaticity, describe classes and properties, describe uses and health and environmental hazards from authorities, and support learning.", "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: petroleum resin, polycyclic aromatic hydrocarbons, helicene, dibenz[a,h]anthracene, Phenanthrenes (and derivatives), 7,12-diphenylbenzo[k]fluoranthene, 1,2,3,4-tetrahydro-9,10-diphenylanthracene, azulene, phenacene, phenanthrenoid, tetraphenylene, 7,12-dimethylbenzanthracene.", "79 finer distinctions are held as aliases rather than separate entries, because telling them apart needs a task that asks for it.", "Described in 52 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 aromatic hydrocarbon, 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": [ "petroleum resin", "polycyclic aromatic hydrocarbons", "helicene", "dibenz[a,h]anthracene", "Phenanthrenes (and derivatives)", "7,12-diphenylbenzo[k]fluoranthene", "1,2,3,4-tetrahydro-9,10-diphenylanthracene", "azulene", "phenacene", "phenanthrenoid", "tetraphenylene", "7,12-dimethylbenzanthracene" ] } ], "standing": "Described in 52 Wikipedia languages, which measures how widely it is written about rather than how important or how common it is. 79 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 aromatic hydrocarbon from another, and a aromatic hydrocarbon 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 aromatic hydrocarbon, 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 aromatic hydrocarbon, 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 aromatic hydrocarbon 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 aromatic hydrocarbon, 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 aromatic hydrocarbon, 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 aromatic hydrocarbon 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 aromatic hydrocarbon 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 aromatic hydrocarbon, 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 aromatic hydrocarbon, 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 aromatic hydrocarbon 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 aromatic hydrocarbon from the things most often confused with it.", "questions": [ { "id": "distinguishing-features-q01", "text": "What identifies and describes what distinguishes a aromatic hydrocarbon, 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 aromatic hydrocarbon, 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 aromatic hydrocarbon 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 aromatic hydrocarbon 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 aromatic hydrocarbon, 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 aromatic hydrocarbon, 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 aromatic hydrocarbon 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 aromatic hydrocarbon is built from and which parts are replaceable.", "questions": [ { "id": "parts-and-materials-q01", "text": "What identifies and describes the composition of a aromatic hydrocarbon, 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 aromatic hydrocarbon, 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 aromatic hydrocarbon 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 aromatic hydrocarbon is judged and by whom.", "questions": [ { "id": "condition-assessment-q01", "text": "What identifies and describes the condition of a aromatic hydrocarbon, 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 aromatic hydrocarbon, 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 aromatic hydrocarbon 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 aromatic hydrocarbon 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 aromatic hydrocarbon is, and what that position is measured against.", "questions": [ { "id": "position-and-frame-q01", "text": "What identifies and describes the location of a aromatic hydrocarbon, 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 aromatic hydrocarbon, 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 aromatic hydrocarbon 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 aromatic hydrocarbon 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 aromatic hydrocarbon, 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 aromatic hydrocarbon, 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 aromatic hydrocarbon 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 aromatic hydrocarbon 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 aromatic hydrocarbon between them.", "questions": [ { "id": "stages-and-transitions-q01", "text": "What identifies and describes the lifecycle of a aromatic hydrocarbon, 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 aromatic hydrocarbon, 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 aromatic hydrocarbon 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 aromatic hydrocarbon, how often and by whom.", "findings": [ { "id": "observation-record", "name": "Observation record", "description": "How an observation of a aromatic hydrocarbon 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 aromatic hydrocarbon, 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 aromatic hydrocarbon, 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 aromatic hydrocarbon 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 aromatic hydrocarbon 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 aromatic hydrocarbon is for, and what it is used for anyway.", "findings": [ { "id": "function-and-purpose", "name": "Function, purpose and misuse", "description": "The function a aromatic hydrocarbon performs and the uses that fall outside it.", "questions": [ { "id": "function-and-purpose-q01", "text": "What identifies and describes the use of a aromatic hydrocarbon, 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 aromatic hydrocarbon, 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 aromatic hydrocarbon 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 aromatic hydrocarbon.", "findings": [ { "id": "procedures-and-skills", "name": "Procedures, skills and required tools", "description": "What an agent needs before it can act on a aromatic hydrocarbon at all.", "questions": [ { "id": "procedures-and-skills-q01", "text": "What identifies and describes handling a aromatic hydrocarbon, 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 aromatic hydrocarbon, 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 aromatic hydrocarbon 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 aromatic hydrocarbon there is and how fast it goes.", "questions": [ { "id": "consumption-and-stock-q01", "text": "What identifies and describes the supply of a aromatic hydrocarbon, 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 aromatic hydrocarbon, 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 aromatic hydrocarbon 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 aromatic hydrocarbon 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 aromatic hydrocarbon 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 aromatic hydrocarbon 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 aromatic hydrocarbon 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 aromatic hydrocarbon, 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 aromatic hydrocarbon 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 aromatic hydrocarbon 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 aromatic hydrocarbon 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 aromatic hydrocarbon, 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 aromatic hydrocarbon 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 aromatic hydrocarbon and how confident it is.", "questions": [ { "id": "claim-provenance-q01", "text": "What identifies and describes a claim about a aromatic hydrocarbon, 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 aromatic hydrocarbon, 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 aromatic hydrocarbon 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 aromatic hydrocarbon is retired without being erased.", "questions": [ { "id": "validity-and-supersession-q01", "text": "What identifies and describes the validity of a claim about a aromatic hydrocarbon, 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 aromatic hydrocarbon, 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 aromatic hydrocarbon 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 } } } }