{ "model": { "rank": 3054, "code": "thing-q19588", "model_id": "vr.tr.transition-metal", "name": "transition metal", "purpose": "Enable an AI agent to identify a transition-metal element, assess its state in a particular material or chemical environment, and determine which uses or transformations have adequate supporting evidence.", "family": "Thing Registry", "category": "Physical world and living systems", "status": "research-draft", "kind": "thing", "plane": "PHY", "domain": "PHY.MAT", "industry": "", "version": "", "url": "/models/thing/q19588/", "tier": 2, "score": 92, "payload": { "layer": "wikidata", "aliases": [ "unpentpentium", "group 3", "group 12", "group 8", "group 7", "group 10", "platinum group" ], "aliasCount": 7, "merged": 7, "knownIn": 92, "facets": null, "markers": [], "lexicalClass": "", "senseRank": null, "alsoRegisteredAs": null, "source": { "dataset": "wikidata", "item": "Q19588", "url": "https://www.wikidata.org/wiki/Q19588", "license": "CC0 1.0" } }, "research": { "vercy": "1.0-draft", "publication": { "status": "research-draft", "adjudicationStatus": "unreviewed", "publishableCanonical": false, "generatedAt": "2026-09-07T14:28:47Z", "providers": [ "Codex", "Grok" ], "missingProviders": [], "pass": 2, "cost": { "grok": { "usd": 0.00949008, "turns": 1, "seconds": 156.8, "error": null }, "codex": { "seconds": 80.6, "error": "Reading additional input from stdin...\nOpenAI Codex v0.153.3\n--------\nworkdir: R:\\02_PROJECTS\\02_Meta_Models_Platforms\\Ver.cy\\current\\thing-registry-backlog\nmodel: gpt-6-astra\nprovider: openai\napproval: never\nsandbox: read-only\nreasoning effort: none\nreasoning summaries: none\nsession id: 01a07c41-314e-77b2-9fea-072f935a99e0\n--------\nuser\nYou are drafting a Vercy meta-model for one registered thing. Answer as JSON only, no prose around it.\n\nThing: transition metal\nRegistry id: vr.tr.transition-metal\nPlane / domain: PHY / PHY.MAT\nRegistry definition: (none recorded)\nNames folded into this entry:" } } }, "metaModel": { "id": "THING-Q19588", "registryId": "vr.tr.transition-metal", "name": "transition metal", "version": "0.1.0-research.1", "entryKind": "thing", "family": "Thing Registry", "domain": [ "PHY.MAT" ], "status": "research-draft" }, "canonicalUrl": "https://ver.cy/models/thing/q19588/", "model": { "registry_id": "vr.tr.transition-metal", "name": "transition metal", "purpose": "Enable an AI agent to identify a transition-metal element, assess its state in a particular material or chemical environment, and determine which uses or transformations have adequate supporting evidence.", "definition": "A transition metal is a metallic d-block element whose atom has an incomplete d subshell, or which can form a cation with an incomplete d subshell, in practice the metals of groups 3-11.", "scope_statement": "This model owns the transition-metal classification and element-centred assessment for vr.tr.transition-metal in PHY / PHY.MAT, connecting elemental identity to observed electronic, chemical and material states while delegating complete descriptions of compounds, alloys and processes to neighbouring models.", "in_scope": [ "Elemental identity and evidence for membership in the transition-metal class under a named definition.", "Electronic configurations of the neutral atom and relevant cations, distinguished from formal electron counts in compounds.", "Observed oxidation states and local coordination environments in identified samples.", "Elemental material form, purity, phase and surface condition relevant to interpreting measurements.", "Evidence supporting redox, coordination, catalytic or material uses under specified conditions." ], "out_of_scope": [ "Complete molecular structures, properties and reaction networks of individual transition-metal compounds and complexes.", "Full composition, processing history and engineering qualification of alloys and manufactured components.", "Detailed mineral, ore-deposit, mining and extraction-process models.", "Comprehensive models of lanthanoids, actinoids and other neighbouring element classes.", "Complete toxicological assessments, exposure-control procedures and waste-management rules." ], "distinguishing_features": [ "Test for a partially occupied d subshell in the atom or a supported cation under the adopted definition; periodic-table position alone does not document that test. [IUPAC Gold Book: transition element](https://goldbook.iupac.org/terms/view/T06456)", "Distinguish an element's class membership from the electron count of the particular species being examined; record both before deciding whether an observed species supports classification.", "For disputed boundaries such as group 12, require an explicit classification convention and evidence for the qualifying electronic state rather than silently equating d-block and transition metal.", "Distinguish elemental metal from a metal-containing salt, oxide, complex or alloy by recording chemical species and composition; detecting the element alone does not establish elemental material.", "Treat colour, magnetic response, multiple oxidation states and catalytic activity as observations to explain, not sufficient standalone membership tests." ], "characteristics": [ { "name": "Element identity", "kind": "category", "unit_or_values": "Element name, symbol and atomic number", "why_it_matters": "Anchors classification and prevents properties of different metals from being conflated." }, { "name": "Transition-metal membership", "kind": "category", "unit_or_values": "Included, excluded or unresolved under a named definition and cited evidence", "why_it_matters": "Makes classification boundaries explicit and reviewable." }, { "name": "Electronic configuration", "kind": "state", "unit_or_values": "Configuration and d-electron occupancy, with species, charge and electronic state", "why_it_matters": "Provides the electronic evidence needed for classification and chemical interpretation." }, { "name": "Oxidation-state assignment", "kind": "state", "unit_or_values": "Formal oxidation state or distribution, assignment method and uncertainty", "why_it_matters": "Supports assessment of redox changes without confusing formal oxidation state with measured atomic charge." }, { "name": "Chemical host", "kind": "relation", "unit_or_values": "Linked elemental substance, compound, complex, alloy or mixed-phase sample", "why_it_matters": "Identifies which entity actually carries the observed properties." }, { "name": "Coordination environment", "kind": "state", "unit_or_values": "Ligand or neighbour identities, coordination number, geometry and evidence", "why_it_matters": "Connects local metal environments to observed behaviour without assigning one environment to the entire element." }, { "name": "Element content and impurities", "kind": "measurement", "unit_or_values": "Mass fraction or amount fraction, with analytical method and detection limits", "why_it_matters": "Separates nominal metal identity from the composition of the material being assessed." }, { "name": "Material and surface condition", "kind": "state", "unit_or_values": "Phase, bulk or dispersed form, particle-size description, surface composition and observation conditions", "why_it_matters": "Allows an agent to judge whether evidence transfers between bulk metal, powder, supported sites and altered surfaces." }, { "name": "Redox potential", "kind": "measurement", "unit_or_values": "V versus a named reference electrode, with redox couple, medium, temperature and measurement conditions", "why_it_matters": "Supports comparison of specific redox transformations under compatible conditions." }, { "name": "Magnetic response", "kind": "measurement", "unit_or_values": "Susceptibility or magnetic moment with explicit units, normalization, field and temperature", "why_it_matters": "Provides evidence for evaluating electronic-state interpretations and application requirements." }, { "name": "Validated use", "kind": "relation", "unit_or_values": "Linked application or transformation, tested metal form, operating conditions and performance evidence", "why_it_matters": "Prevents a reported use of one metal species or formulation from becoming a blanket affordance of the element." } ], "affordances": [ "Classify a candidate element against a stated transition-metal definition and flag unresolved boundary cases.", "Select analytical observations that distinguish elemental material from oxidized, coordinated or alloyed forms.", "Compare metal candidates for a specified role using measurements obtained under compatible conditions.", "Evaluate a proposed oxidation, reduction, coordination or surface-treatment step against evidence for the identified species and material form.", "Detect when changed speciation, surface condition or impurities invalidate an earlier assessment.", "Route a proposed use to the relevant compound, alloy, process and hazard models before treating it as supported." ] }, "sources": [ { "id": "iupac-gold-book-transition-element", "title": "Compendium of Chemical Terminology (IUPAC Gold Book), entry \"transition element\"", "url": "", "what_it_supports": "The incomplete-d-subshell definition used for the class, and the distinction from a mere d-block listing." }, { "id": "iupac-red-book-2005", "title": "Nomenclature of Inorganic Chemistry - IUPAC Recommendations 2005 (the Red Book)", "url": "", "what_it_supports": "IUPAC grouping of the d-block, the preferred term transition element, and the usual exclusion of group 12 from the class." }, { "id": "cotton-wilkinson-aic", "title": "Advanced Inorganic Chemistry, 6th edition (Cotton, Wilkinson, Murillo, Bochmann)", "url": "", "what_it_supports": "Series (3d/4d/5d), early versus late chemistry, variable oxidation states, coloured ions, magnetism, and why Zn, Cd and Hg are borderline." }, { "id": "wikipedia-transition-metal", "title": "Transition metal", "url": "https://en.wikipedia.org/wiki/Transition_metal", "what_it_supports": "Consensus range of the class, group-3 and group-12 disputes, and the usual neighbours (d-block, inner transition, post-transition).", "url_status": "live" } ], "structure": { "bundles": [ { "id": "element-identity-and-classification", "name": "Element identity and classification", "description": "Establish which element is represented and why it belongs within the adopted transition-metal boundary.", "rationale": "The registry has no recorded definition, so membership must be an explicit, evidenced decision.", "layers": [ { "id": "element-identification", "name": "Element identification", "description": "Separate elemental identity from sample labels and material composition.", "findings": [ { "id": "confirmed-element-identity", "name": "Confirmed element identity", "description": "Record the element being assessed and the evidence connecting a material observation to that element.", "questions": [ { "text": "Which element name, symbol and atomic number does this record represent?", "kind": "definition", "id": "confirmed-element-identity-q01" }, { "text": "Which analytical result or authoritative record establishes the element's identity, and does it establish chemical form as well?", "kind": "provenance", "id": "confirmed-element-identity-q02" } ] } ] }, { "id": "membership-boundary", "name": "Membership boundary", "description": "Apply a declared convention and preserve disagreements at the edges of the class.", "findings": [ { "id": "electronic-membership-evidence", "name": "Electronic membership evidence", "description": "Connect the classification decision to the qualifying atomic or cationic electronic state.", "questions": [ { "text": "Which transition-metal definition is being applied, and which atomic or cationic configuration satisfies it?", "kind": "definition", "id": "electronic-membership-evidence-q01" }, { "text": "Would another relevant convention change membership, particularly for group 3, group 12 or elements discussed as inner transition elements?", "kind": "boundary", "id": "electronic-membership-evidence-q02" } ] } ] } ] }, { "id": "electronic-state-and-speciation", "name": "Electronic state and speciation", "description": "Represent the metal's actual chemical environment separately from element-level classification.", "rationale": "An agent needs species-specific evidence to interpret metal behaviour and assess possible transformations.", "layers": [ { "id": "oxidation-and-electron-count", "name": "Oxidation and electron count", "description": "Distinguish oxidation-state assignments, formal d counts and measured electronic evidence.", "findings": [ { "id": "supported-electronic-assignment", "name": "Supported electronic assignment", "description": "Record the electronic assignment for the observed species, including mixed or unresolved states.", "questions": [ { "text": "Which oxidation states and formal d-electron counts are assigned to the metal species present?", "kind": "definition", "id": "supported-electronic-assignment-q01" }, { "text": "Which measurements support these assignments, and can they distinguish mixed valence or alternative interpretations?", "kind": "measurement", "id": "supported-electronic-assignment-q02" } ] } ] }, { "id": "local-coordination", "name": "Local coordination", "description": "Identify the metal's neighbours and connect local environments to separately modelled chemical species.", "findings": [ { "id": "resolved-metal-environment", "name": "Resolved metal environment", "description": "Record coordination evidence without treating a compound's complete structure as a property of the element.", "questions": [ { "text": "Which ligands or neighbouring atoms, coordination numbers and geometries are supported for the metal sites?", "kind": "measurement", "id": "resolved-metal-environment-q01" }, { "text": "Which compound, complex or solid-phase model owns each environment, and are multiple environments unresolved?", "kind": "boundary", "id": "resolved-metal-environment-q02" } ] } ] } ] }, { "id": "material-form-and-surface", "name": "Material form and surface", "description": "Establish what metal-bearing material is present and whether its bulk and surface remain representative of the intended use.", "rationale": "Element identity alone cannot establish the condition of a metal specimen or justify transferring results between material forms.", "layers": [ { "id": "composition-and-phase", "name": "Composition and phase", "description": "Resolve elemental substance, alloy, compound and mixed-phase material.", "findings": [ { "id": "metal-bearing-material-identity", "name": "Metal-bearing material identity", "description": "Record metal content, impurities and phase evidence before interpreting material properties.", "questions": [ { "text": "What measured composition and phase evidence distinguish elemental metal from an alloy, oxide, salt or mixture?", "kind": "measurement", "id": "metal-bearing-material-identity-q01" }, { "text": "Which impurities or secondary phases could account for the observed response, and what are their detection limits?", "kind": "measurement", "id": "metal-bearing-material-identity-q02" } ] } ] }, { "id": "surface-and-dispersion", "name": "Surface and dispersion", "description": "Track exposed metal form and surface alteration under the relevant environment.", "findings": [ { "id": "surface-state-relevance", "name": "Surface state relevance", "description": "Establish whether surface composition and dispersion support the intended comparison or action.", "questions": [ { "text": "What evidence describes particle size or dispersion and any oxide, adsorbate or other surface layer?", "kind": "measurement", "id": "surface-state-relevance-q01" }, { "text": "Does the current surface condition require re-characterization before the proposed catalytic, electrochemical or material use?", "kind": "action", "id": "surface-state-relevance-q02" } ] } ] } ] }, { "id": "condition-dependent-responses", "name": "Condition-dependent responses", "description": "Connect observations relevant to transition-metal chemistry with their measurement conditions and competing explanations.", "rationale": "Redox and electronic-response evidence is useful only when tied to a particular metal state and environment.", "layers": [ { "id": "redox-behaviour", "name": "Redox behaviour", "description": "Assess specific metal redox couples and distinguish equilibrium evidence from observed transformation rates.", "findings": [ { "id": "qualified-redox-evidence", "name": "Qualified redox evidence", "description": "Record the conditions and limitations governing a proposed change in metal oxidation state.", "questions": [ { "text": "Which redox couple and potential were measured, against which reference electrode and in what medium?", "kind": "measurement", "id": "qualified-redox-evidence-q01" }, { "text": "What evidence addresses reaction rate, passivation or competing chemistry under the proposed oxidation or reduction conditions?", "kind": "action", "id": "qualified-redox-evidence-q02" } ] } ] }, { "id": "magnetic-and-spectroscopic-response", "name": "Magnetic and spectroscopic response", "description": "Use measured responses to test electronic-state and coordination interpretations.", "findings": [ { "id": "interpretable-electronic-response", "name": "Interpretable electronic response", "description": "Preserve measurement context and competing causes of magnetic or spectral observations.", "questions": [ { "text": "Which magnetic or spectroscopic observations constrain the proposed metal electronic state, and under what conditions?", "kind": "measurement", "id": "interpretable-electronic-response-q01" }, { "text": "Could impurities, multiple species, collective solid-state effects or non-metal-centred transitions explain the response?", "kind": "boundary", "id": "interpretable-electronic-response-q02" } ] } ] } ] }, { "id": "use-and-transformation-decisions", "name": "Use and transformation decisions", "description": "Translate evidence about a particular transition metal into bounded decisions about selection, transformation and handling.", "rationale": "A class label must not become automatic permission to assign catalytic activity, substitute materials or apply a treatment.", "layers": [ { "id": "role-specific-suitability", "name": "Role-specific suitability", "description": "Assess evidence for the precise metal form and function being proposed.", "findings": [ { "id": "demonstrated-metal-role", "name": "Demonstrated metal role", "description": "Link application claims to tested species, performance criteria and operating conditions.", "questions": [ { "text": "Which exact metal form has demonstrated the proposed catalytic, electrical, magnetic or structural role, and against what performance criterion?", "kind": "provenance", "id": "demonstrated-metal-role-q01" }, { "text": "What additional evidence is needed before substituting this metal or transferring the result to another oxidation state, support or material form?", "kind": "action", "id": "demonstrated-metal-role-q02" } ] } ] }, { "id": "transformation-and-handling-constraints", "name": "Transformation and handling constraints", "description": "Connect a proposed operation to species changes, material changes and applicable external constraints.", "findings": [ { "id": "bounded-operation-decision", "name": "Bounded operation decision", "description": "Record the evidence and linked assessments required to support an operation on the identified metal-bearing material.", "questions": [ { "text": "Which oxidation-state, coordination, phase or surface changes are expected from the proposed operation, and how will they be checked?", "kind": "action", "id": "bounded-operation-decision-q01" }, { "text": "Which hazard and process assessments apply to this exact species and form, including any powder, aerosol or dissolved-metal exposure created by the operation?", "kind": "boundary", "id": "bounded-operation-decision-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-kinds", "name": "Kinds and varieties", "description": "Reported by the breadth pass; each item needs checking against its source before it becomes normative.", "evidence": [ "First-row (3d) transition metals (Sc-Cu)", "Second-row (4d) transition metals (Y-Ag)", "Third-row (5d) transition metals (Lu/Hf-Au)", "Early transition metals (groups 3-7)", "Late transition metals (groups 8-11)", "Inner transition metals (lanthanoids and actinoids), treated as a related f-block class", "Platinum-group metals (Ru, Rh, Pd, Os, Ir, Pt)", "Group 12 d-block metals (Zn, Cd, Hg, Cn), included in some teaching lists and excluded by the incomplete-d-shell test" ], "questions": [ { "id": "evidence-kinds-q01", "text": "Which of these kinds and varieties hold for the sense of transition metal this model covers, and on what evidence?", "kind": "provenance" } ] }, { "id": "evidence-identifiers", "name": "Identifiers and schemes", "description": "Reported by the breadth pass; each item needs checking against its source before it becomes normative.", "evidence": [ { "scheme": "Wikidata", "value_or_pattern": "Q19588", "note": "Item \"transition metal\"; confirm on Wikidata before treating the Q-id as canonical in a registry." }, { "scheme": "IUPAC Gold Book", "value_or_pattern": "transition element", "note": "Preferred IUPAC term for the class; no single CAS or UN number exists for the class as a whole." }, { "scheme": "Periodic-table groups", "value_or_pattern": "groups 3-11 (IUPAC class); groups 3-12 in many general-chemistry texts", "note": "Atomic numbers typically 21-29, 39-47, 71 or 72-79, plus the 6d homologues when they are isolated." }, { "scheme": "MeSH", "value_or_pattern": "D014148", "note": "Heading \"Transition Elements\"; used in biomedical indexing, not as a chemical identifier for a specimen." } ], "questions": [ { "id": "evidence-identifiers-q01", "text": "Which of these identifiers and schemes hold for the sense of transition metal this model covers, and on what evidence?", "kind": "provenance" } ] }, { "id": "evidence-standards-and-regulation", "name": "Standards and regulation", "description": "Reported by the breadth pass; each item needs checking against its source before it becomes normative.", "evidence": [ "IUPAC Recommendations 2005 (Red Book) and the IUPAC Gold Book - International Union of Pure and Applied Chemistry: definition and nomenclature of the class.", "IUPAC periodic table and CIAAW atomic-weight tables - International Union of Pure and Applied Chemistry / Commission on Isotopic Abundances and Atomic Weights: which elements sit in the d-block and their standard atomic weights.", "GHS / EU CLP - UNECE and the European Commission: classification, labelling and packaging apply to individual transition-metal substances and compounds, not to the class as such.", "IARC Monographs - International Agency for Research on Cancer: carcinogen evaluations for specific metals and compounds (notably Ni, Cr(VI), Cd, Co), not a class-wide listing.", "REACH and RoHS - European Union: substance restrictions and product limits for named metals (Ni, Cd, Cr(VI), Hg, and others) that overlap the class." ], "questions": [ { "id": "evidence-standards-and-regulation-q01", "text": "Which of these standards and regulation hold for the sense of transition metal this model covers, and on what evidence?", "kind": "provenance" } ] }, { "id": "evidence-real-world-use", "name": "Real-world use", "description": "Reported by the breadth pass; each item needs checking against its source before it becomes normative.", "evidence": [ "Structural and tool alloys: steels and superalloys based on Fe, Ni, Co, Cr, Mo, V, Ti, W.", "Heterogeneous and homogeneous catalysis: Fe (ammonia), Ni, Pd, Pt, Rh (hydrogenation, automotive three-way catalysts, cross-coupling).", "Electrical and electronic conductors and barriers: Cu interconnects, Ag contacts, W vias, Ta/TaN and TiN barrier layers.", "Permanent magnets and soft magnetic cores: Fe, Co, Ni and their alloys; many high-energy magnets also use lanthanoids.", "Rechargeable-battery cathodes and current collectors: Ni, Co, Mn, Fe in oxide or phosphate cathodes; Cu and Ni foils.", "Pigments, platings and biomedical hardware: Cr, Co and Fe oxides as colourants; Ti and Co-Cr implants; Au, Ag, Pt in jewellery, dentistry and electrodes." ], "questions": [ { "id": "evidence-real-world-use-q01", "text": "Which of these real-world use hold for the sense of transition metal this model covers, and on what evidence?", "kind": "provenance" } ] }, { "id": "evidence-measurements", "name": "Typical measurements", "description": "Reported by the breadth pass; each item needs checking against its source before it becomes normative.", "evidence": [ { "quantity": "Density (298 K, elemental metal)", "typical_range": "about 3.0 (Sc) to 22.6 (Os)", "unit": "g·cm−3" }, { "quantity": "Melting point (elemental metal, groups 3-11)", "typical_range": "about 961 (Ag) to 3422 (W); lower if group 12 is included (Hg −38.8 °C)", "unit": "°C" }, { "quantity": "Electrical resistivity (293 K, elemental metal)", "typical_range": "about 1.6 (Ag) to about 140 (Mn)", "unit": "µΩ·cm" }, { "quantity": "Common oxidation states in compounds", "typical_range": "+1 to +8 (Os, Ru reach +8; Cu, Ag often +1)", "unit": "oxidation number" }, { "quantity": "d-electron count of the free atom or common cation", "typical_range": "1-9 for species that meet the incomplete-d-shell test; 10 for group 12 in the +2 state", "unit": "electrons" }, { "quantity": "Young's modulus (elemental metal)", "typical_range": "about 44 (Sc) to about 410 (W)", "unit": "GPa" } ], "questions": [ { "id": "evidence-measurements-q01", "text": "Which of these typical measurements hold for the sense of transition metal this model covers, and on what evidence?", "kind": "provenance" } ] }, { "id": "evidence-failure-modes-and-hazards", "name": "Failure modes and hazards", "description": "Reported by the breadth pass; each item needs checking against its source before it becomes normative.", "evidence": [ "Corrosion and high-temperature oxidation; Mo, W and Re can fail catastrophically in air by volatile-oxide formation.", "Hydrogen embrittlement of ferritic steels and titanium alloys in hydrogen-bearing service.", "Toxicity and carcinogenicity of specific species: Ni metal and compounds (sensitiser; some compounds carcinogenic), Cr(VI), Cd, and some Co compounds.", "Metal-fume fever from inhalation of Zn, Cu or related fumes; chronic lung disease from hard-metal (Co-W) dust.", "Pyrophoric behaviour of fine powders and sponge (Fe, Ni, Ti, Zr and others) and runaway catalytic oxidation on high-surface-area Pt-group metals.", "Allergic contact dermatitis from Ni (and some Co and Cr) in consumer alloys." ], "questions": [ { "id": "evidence-failure-modes-and-hazards-q01", "text": "Which of these failure modes and hazards hold for the sense of transition metal this model covers, and on what evidence?", "kind": "provenance" } ] }, { "id": "evidence-regional-variation", "name": "Regional variation", "description": "Reported by the breadth pass; each item needs checking against its source before it becomes normative.", "evidence": [ "IUPAC and most inorganic texts restrict the class to groups 3-11; many US general-chemistry courses count groups 3-12 as transition metals.", "Group 3 placement is unsettled: Sc-Y-Lu versus Sc-Y-La changes whether lanthanum is a transition metal or only an inner-transition element.", "IUPAC prefers \"transition element\"; engineering and materials practice almost always says \"transition metal\".", "Older Mendeleev-style subgroup VIII (Fe, Co, Ni as a triad, with Ru-Rh-Pd and Os-Ir-Pt) is still visible in some Russian and older European tables.", "Environmental and product law uses \"heavy metal\" lists that overlap this class inconsistently across jurisdictions and are not an electronic-structure classification." ], "questions": [ { "id": "evidence-regional-variation-q01", "text": "Which of these regional variation hold for the sense of transition metal this model covers, and on what evidence?", "kind": "provenance" } ] }, { "id": "evidence-neighbours", "name": "Neighbouring kinds and how to tell them apart", "description": "Reported by the breadth pass; each item needs checking against its source before it becomes normative.", "evidence": [ { "name": "d-block element", "difference": "The d-block is a periodic-table strip (groups 3-12). A transition metal, on the IUPAC test, must also have an incomplete d subshell in the atom or a common cation, which drops Zn, Cd and Hg in ordinary oxidation states." }, { "name": "Post-transition (p-block) metal", "difference": "Al, Ga, In, Sn, Pb, Bi and related metals have a filled d10 core and chemistry dominated by s/p electrons; they lack the incomplete-d-shell, highly variable oxidation-state pattern of groups 3-11." }, { "name": "Inner transition metal (lanthanoid or actinoid)", "difference": "f-block species with filling 4f or 5f shells. They are often taught beside transition metals but fail the d-subshell definition unless a given ion is being discussed as a d-electron system." }, { "name": "Alkaline earth metal", "difference": "Group 2 (s-block) metals with a closed ns2 valence shell and an almost fixed +2 state; no partly filled d shell in the common ions (except some heavy-group-2 organometallic curiosities)." }, { "name": "Heavy metal (toxicological / environmental use)", "difference": "A density- or toxicity-based label (Pb, Hg, Cd, and varying others). It is not a periodic-table class and both includes non-transition metals and omits many light transition metals such as Ti and Sc." }, { "name": "Metalloid", "difference": "Si, Ge, As and neighbours show intermediate electrical conductivity and largely covalent chemistry; they are not metallic d-electron systems with typical TM coordination and redox behaviour." } ], "questions": [ { "id": "evidence-neighbours-q01", "text": "Which of these neighbouring kinds and how to tell them apart hold for the sense of transition metal this model covers, and on what evidence?", "kind": "provenance" } ] } ] } ] } ] }, "openQuestions": [ "Which authoritative definition should the registry adopt, and how should disagreements involving group 3, group 12 and inner transition terminology be represented?", "What evidentiary threshold should qualify an uncommon cationic electronic state for membership, especially when evidence is limited to unusual experimental conditions or calculations?", "Which existing Vercy element, metal, compound or material models already own parts of this concept and should be linked to avoid duplicate sources of truth?", "What minimum analytical evidence is sufficient to separate oxidation-state mixtures, coordination environments and bulk-versus-surface contributions for each intended decision?", "Which application-specific performance and handling evidence must be gathered before any proposed affordance can be treated as supported for a particular transition metal?" ], "statistics": { "bundles": 6, "layers": 11, "findings": 18, "questions": 28 } }, "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 transition metal, record what state it is in, and decide what may be done with it.", "whatItIs": "Enable an AI agent to identify a transition-metal element, assess its state in a particular material or chemical environment, and determine which uses or transformations have adequate supporting evidence.", "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: unpentpentium, group 3, group 12, group 8, group 7, group 10, platinum group.", "7 finer distinctions are held as aliases rather than separate entries, because telling them apart needs a task that asks for it.", "Described in 92 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 transition metal, 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": [ "unpentpentium", "group 3", "group 12", "group 8", "group 7", "group 10", "platinum group" ] } ], "standing": "Described in 92 Wikipedia languages, which measures how widely it is written about rather than how important or how common it is. 7 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 transition metal from another, and a transition metal 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 transition metal, 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 transition metal, 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 transition metal 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 transition metal, 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 transition metal, 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 transition metal 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 transition metal 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 transition metal, 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 transition metal, 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 transition metal 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 transition metal from the things most often confused with it.", "questions": [ { "id": "distinguishing-features-q01", "text": "What identifies and describes what distinguishes a transition metal, 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 transition metal, 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 transition metal 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 transition metal 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 transition metal, 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 transition metal, 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 transition metal 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 transition metal is built from and which parts are replaceable.", "questions": [ { "id": "parts-and-materials-q01", "text": "What identifies and describes the composition of a transition metal, 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 transition metal, 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 transition metal 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 transition metal is judged and by whom.", "questions": [ { "id": "condition-assessment-q01", "text": "What identifies and describes the condition of a transition metal, 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 transition metal, 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 transition metal 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 transition metal 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 transition metal is, and what that position is measured against.", "questions": [ { "id": "position-and-frame-q01", "text": "What identifies and describes the location of a transition metal, 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 transition metal, 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 transition metal 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 transition metal 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 transition metal, 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 transition metal, 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 transition metal 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 transition metal 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 transition metal between them.", "questions": [ { "id": "stages-and-transitions-q01", "text": "What identifies and describes the lifecycle of a transition metal, 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 transition metal, 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 transition metal 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 transition metal, how often and by whom.", "findings": [ { "id": "observation-record", "name": "Observation record", "description": "How an observation of a transition metal 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 transition metal, 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 transition metal, 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 transition metal 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 transition metal 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 transition metal is for, and what it is used for anyway.", "findings": [ { "id": "function-and-purpose", "name": "Function, purpose and misuse", "description": "The function a transition metal performs and the uses that fall outside it.", "questions": [ { "id": "function-and-purpose-q01", "text": "What identifies and describes the use of a transition metal, 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 transition metal, 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 transition metal 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 transition metal.", "findings": [ { "id": "procedures-and-skills", "name": "Procedures, skills and required tools", "description": "What an agent needs before it can act on a transition metal at all.", "questions": [ { "id": "procedures-and-skills-q01", "text": "What identifies and describes handling a transition metal, 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 transition metal, 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 transition metal 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 transition metal there is and how fast it goes.", "questions": [ { "id": "consumption-and-stock-q01", "text": "What identifies and describes the supply of a transition metal, 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 transition metal, 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 transition metal 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 transition metal 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 transition metal 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 transition metal 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 transition metal 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 transition metal, 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 transition metal 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 transition metal 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 transition metal 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 transition metal, 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 transition metal 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 transition metal and how confident it is.", "questions": [ { "id": "claim-provenance-q01", "text": "What identifies and describes a claim about a transition metal, 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 transition metal, 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 transition metal 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 transition metal is retired without being erased.", "questions": [ { "id": "validity-and-supersession-q01", "text": "What identifies and describes the validity of a claim about a transition metal, 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 transition metal, 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 transition metal 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 } } } }