{
  "vercy": "1.0-draft",
  "publication": {
    "status": "research-draft",
    "adjudicationStatus": "unreviewed",
    "publishableCanonical": false,
    "generatedAt": "2026-09-12T08:57:03Z",
    "providers": [
      "Codex"
    ],
    "breadth": "recalled by Codex without web access - no source was read",
    "missingProviders": [],
    "pass": 2,
    "cost": {
      "grok": {
        "seconds": 20.5,
        "error": "Reading additional input from stdin...\nOpenAI Codex v0.153.4\n--------\nworkdir: R:\\02_PROJECTS\\02_Meta_Models_Platforms\\Ver.cy\\current\\thing-registry-backlog\nmodel: gpt-6-astra\nprovider: openai\napproval: never\nsandbox: read-only\nreasoning effort: none\nreasoning summaries: none\nsession id: 01a094d4-30fb-7370-ab32-4a4cb14b3619\n--------\nuser\nDescribe what is already known about one registered thing. Answer as JSON only, no prose around it.\n\nThing: Curtiss A-12 Shrike\nSense to describe: (none recorded)\nDomain code: PHY.OBJ\nAlso known as: (none)\n\n\nContext for this batch of 1001 things:\n# Batch 043: ",
        "usd": 0.0,
        "recall": true
      },
      "codex": {
        "seconds": 94.1,
        "error": "Reading additional input from stdin...\nOpenAI Codex v0.153.4\n--------\nworkdir: R:\\02_PROJECTS\\02_Meta_Models_Platforms\\Ver.cy\\current\\thing-registry-backlog\nmodel: gpt-6-astra\nprovider: openai\napproval: never\nsandbox: read-only\nreasoning effort: none\nreasoning summaries: none\nsession id: 01a094d4-30ea-70d2-a860-499a4b8d595e\n--------\nuser\nYou are drafting a Vercy meta-model for one registered thing. Answer as JSON only, no prose around it.\n\nThing: Curtiss A-12 Shrike\nRegistry id: vr.tr.curtiss-a-12-shrike\nPlane / domain: PHY / PHY.OBJ\nRegistry definition: (none recorded)\nNames folded into this "
      }
    },
    "enrichment": {
      "pass": 3,
      "engine": "claude",
      "producedAt": "2026-10-06T12:00:00Z",
      "ingestedAt": "2026-10-06T08:54:05+00:00",
      "fields": [
        "agent_conduct",
        "ethics",
        "failure_modes_and_hazards",
        "owners",
        "visual_identification"
      ]
    },
    "gate": {
      "passed": true,
      "version": "1.0",
      "at": "2026-10-07T10:10:29+00:00",
      "evidence": [
        "completeness 1.00",
        "sense: Wikidata description",
        "2 live sources",
        "review by codex: pass"
      ]
    }
  },
  "metaModel": {
    "id": "THING-Q3007845",
    "registryId": "vr.tr.curtiss-a-12-shrike",
    "name": "Curtiss A-12 Shrike",
    "version": "0.1.0-research.1",
    "entryKind": "thing",
    "family": "Thing Registry",
    "domain": [
      "PHY.OBJ"
    ],
    "status": "research-draft"
  },
  "canonicalUrl": "https://ver.cy/models/thing/q3007845/",
  "model": {
    "registry_id": "vr.tr.curtiss-a-12-shrike",
    "name": "Curtiss A-12 Shrike",
    "purpose": "Enable an agent to identify the Curtiss A-12 Shrike aircraft type, assess evidence about its configurations and condition, and determine appropriate documentation or preservation actions.",
    "definition": "The Curtiss A-12 Shrike was an American two-seat, single-engine, low-wing attack monoplane with fixed landing gear, developed from the Curtiss A-8 and operated during the 1930s.",
    "scope_statement": "This model owns the type-level identity, configuration distinctions, operating constraints and evidence requirements of Curtiss A-12 Shrike, registry vr.tr.curtiss-a-12-shrike, within PHY / PHY.OBJ; individual aircraft supply dated examples rather than defining the type.",
    "in_scope": [
      "A-12 designation, manufacturer identity and boundaries within the Curtiss Shrike lineage",
      "Airframe recognition, crew arrangement and configuration-dependent dimensions",
      "Radial-engine installation, propeller compatibility and documented performance conditions",
      "Historical attack equipment and its effects on aircraft configuration",
      "Service attribution, technical-document applicability and preservation assessment"
    ],
    "out_of_scope": [
      "Independent models of the Curtiss A-8 and YA-10 predecessors",
      "Other aircraft bearing A-12 or Shrike names",
      "Generic piston-engine aircraft principles",
      "Individual airframe ownership, maintenance logs and flight authorization records",
      "Standalone engines, weapons and ammunition as separately registered things",
      "Scale models, replicas and photographs as collection objects"
    ],
    "distinguishing_features": [
      "Require Curtiss manufacturer attribution and the A-12 designation together; neither A-12 nor Shrike alone establishes identity.",
      "Check the single radial-engine nose against the inline-engine A-8 configuration; establish engine subtype from applicable documentation rather than silhouette alone.",
      "Use the combined low-wing monoplane layout, fixed main landing gear and tandem crew positions as recognition evidence, not as a unique identifier.",
      "Distinguish production A-12 attribution from the radial-engined YA-10 predecessor through designation, serial evidence and cockpit-layout documentation.",
      "Separate full-size aircraft from representations: Smithsonian object A19840127000 is explicitly a 1/16-scale exhibit model. [Smithsonian collection record](https://www.si.edu/object/model-static-curtiss-12-shrike%3Anasm_A19840127000)"
    ],
    "characteristics": [
      {
        "name": "Designation and configuration attribution",
        "kind": "category",
        "unit_or_values": "Documented A-12 configuration; export attribution pending verification; predecessor; other Shrike; unresolved",
        "why_it_matters": "Prevents engine, performance and service information from migrating between similarly named aircraft."
      },
      {
        "name": "Airframe identification evidence",
        "kind": "relation",
        "unit_or_values": "Links to serial records, manufacturer markings, dated photographs and configuration documents",
        "why_it_matters": "Connects an observed aircraft to the type without making paintwork decisive."
      },
      {
        "name": "Engine and propeller installation",
        "kind": "relation",
        "unit_or_values": "Engine designation and suffix, propeller model, applicable drawing or technical order",
        "why_it_matters": "The Cyclone installation is central to A-12 recognition, while exact ratings and compatibility require configuration evidence."
      },
      {
        "name": "Airframe geometry",
        "kind": "measurement",
        "unit_or_values": "Wingspan, length and height in m; wing area in m²; configuration and measurement convention required",
        "why_it_matters": "Supports identification and display planning while exposing discrepancies between published specifications."
      },
      {
        "name": "Mass and loading basis",
        "kind": "measurement",
        "unit_or_values": "kg for empty, equipped and loaded mass; centre-of-gravity position with stated datum",
        "why_it_matters": "Prevents comparison of unlike weight definitions and unsupported inference of permissible loading."
      },
      {
        "name": "Performance evidence",
        "kind": "measurement",
        "unit_or_values": "Speed in km/h, altitude in m, range in km, climb in m/s; loading and atmospheric conditions required",
        "why_it_matters": "Makes historical performance figures interpretable rather than treating them as universal operating limits."
      },
      {
        "name": "Crew and equipment configuration",
        "kind": "category",
        "unit_or_values": "Pilot and rear-crew accommodation; communication equipment; documented attack-equipment fit",
        "why_it_matters": "Separates baseline arrangement from modifications and incomplete representations."
      },
      {
        "name": "Preservation and assessment state",
        "kind": "state",
        "unit_or_values": "Documentary subject; attributed component; incomplete airframe; static restoration; replica; unknown",
        "why_it_matters": "Allows assessment without assuming that a complete or airworthy original survives."
      },
      {
        "name": "Technical authority applicability",
        "kind": "relation",
        "unit_or_values": "Issuing body, document identifier, date, revision, configuration coverage and access status",
        "why_it_matters": "Distinguishes an archival document listing from instructions actually obtained and reviewed."
      }
    ],
    "affordances": [
      "Classify a candidate aircraft or photograph as A-12, related Shrike or unresolved using multiple identifying features.",
      "Compare documented domestic and export configurations without merging their specifications.",
      "Associate historical performance claims with the engine, loading and test conditions they describe.",
      "Identify missing evidence before accepting a restoration component or configuration as authentic.",
      "Prepare a conservation assessment that separates historical completeness, physical condition and authority for movement or operation."
    ],
    "agent_conduct": {
      "may": [
        "Identify photographs or a surviving airframe as this attack monoplane type.",
        "Describe its service history from historical sources.",
        "Distinguish it from the earlier attack design it developed from."
      ],
      "must_not": [
        "Present a different type or variant as this aircraft without evidence.",
        "Invent combat details or attribute losses to named crews without evidence.",
        "Operate or move a surviving airframe without the owner's authority."
      ],
      "requires_human": [
        "Restoration or loan of a surviving airframe."
      ]
    },
    "ethics": {
      "considerations": [
        "Combat history includes people killed on both sides and should be told without glorification."
      ],
      "affected_parties": [
        "Historians and museums",
        "Descendants of aircrew"
      ]
    },
    "owners": {
      "steward": "The museum or owner of any surviving example or remains; the state for items in public collections.",
      "master_systems": []
    },
    "visual_identification": [
      "Low-wing monoplane with fixed, faired main landing gear.",
      "Two seats in tandem under a long canopy and an air-cooled radial engine.",
      "Period serials and unit markings."
    ],
    "failure_modes_and_hazards": [
      "Obsolete by the start of wider war, leaving crews vulnerable.",
      "Preserved airframes may hold hazardous paints and fluids."
    ],
    "what_it_is_for": [
      "This aircraft type was developed for military ground attack and operated during the 1930s.",
      "It is encountered today through historical photographs, technical documentation and material associated with aviation collections.",
      "Research and preservation work use these records to distinguish configurations and interpret surviving components."
    ],
    "standards_and_regulation": [
      "The United States Army Air Corps officially classified this aircraft under the A-12 designation in its attack aircraft series."
    ]
  },
  "sources": [
    {
      "id": "wikidata",
      "title": "Wikidata item Q3007845: Curtiss A-12 Shrike",
      "url": "https://www.wikidata.org/wiki/Q3007845",
      "url_status": "live",
      "what_it_supports": "identity and sense of the item",
      "checked_by": "wikidata-api"
    },
    {
      "id": "wikipedia-en",
      "title": "Wikipedia: Curtiss A-12 Shrike",
      "url": "https://en.wikipedia.org/wiki/Curtiss_A-12_Shrike",
      "url_status": "live",
      "what_it_supports": "general description of the item",
      "checked_by": "wikidata-api sitelink"
    }
  ],
  "structure": {
    "bundles": [
      {
        "id": "a-12-identity-and-lineage",
        "name": "A-12 identity and lineage",
        "description": "Establish the identity of this particular Curtiss aircraft type and its boundaries.",
        "rationale": "Shared Shrike names and reused A-12 designations make name-only matching unreliable.",
        "layers": [
          {
            "id": "designation-evidence",
            "name": "Designation evidence",
            "description": "Resolve manufacturer, military designation and documentary attribution.",
            "findings": [
              {
                "id": "curtiss-a-12-attribution",
                "name": "Curtiss A-12 attribution",
                "description": "Require mutually consistent manufacturer, designation and period evidence before assigning this registry identity.",
                "questions": [
                  {
                    "text": "Which manufacturer or military record explicitly identifies the subject as a Curtiss A-12?",
                    "kind": "provenance",
                    "id": "curtiss-a-12-attribution-q01"
                  },
                  {
                    "text": "What evidence excludes other aircraft designated A-12 or named Shrike?",
                    "kind": "boundary",
                    "id": "curtiss-a-12-attribution-q02"
                  }
                ]
              }
            ]
          },
          {
            "id": "predecessor-and-export-boundaries",
            "name": "Predecessor and export boundaries",
            "description": "Represent inherited design relationships and establish which configurations belong under this entry.",
            "findings": [
              {
                "id": "a-8-ya-10-and-export-distinctions",
                "name": "A-8, YA-10 and export distinctions",
                "description": "Record the changes separating A-12 from its predecessors and leave export equivalence conditional on manufacturer evidence.",
                "questions": [
                  {
                    "text": "Which documented engine and crew-layout changes distinguish A-12 from A-8 and YA-10?",
                    "kind": "definition",
                    "id": "a-8-ya-10-and-export-distinctions-q01"
                  },
                  {
                    "text": "Which export designations are configurations of this registered thing, and which require only a relationship to it?",
                    "kind": "boundary",
                    "id": "a-8-ya-10-and-export-distinctions-q02"
                  }
                ]
              }
            ]
          }
        ]
      },
      {
        "id": "shrike-airframe-and-crew",
        "name": "Shrike airframe and crew",
        "description": "Describe the visible structure and crew arrangement used to recognize and assess an A-12.",
        "rationale": "Its braced wing, fixed gear and cockpit arrangement provide stronger evidence together than any isolated feature.",
        "layers": [
          {
            "id": "wing-gear-and-geometry",
            "name": "Wing, gear and geometry",
            "description": "Relate external recognition features to drawings and dimension conventions.",
            "findings": [
              {
                "id": "airframe-recognition-baseline",
                "name": "Airframe recognition baseline",
                "description": "Establish the applicable wing-bracing pattern, landing-gear fairings and overall dimensions from dated evidence.",
                "questions": [
                  {
                    "text": "Which combination of wing bracing, gear fairings and fuselage details identifies the documented A-12 configuration?",
                    "kind": "definition",
                    "id": "airframe-recognition-baseline-q01"
                  },
                  {
                    "text": "What span, length and height are supported, and does height include a specified ground attitude or propeller position?",
                    "kind": "measurement",
                    "id": "airframe-recognition-baseline-q02"
                  }
                ]
              }
            ]
          },
          {
            "id": "tandem-crew-accommodation",
            "name": "Tandem crew accommodation",
            "description": "Resolve cockpit separation, enclosure details and crew responsibilities.",
            "findings": [
              {
                "id": "cockpit-layout-and-controls",
                "name": "Cockpit layout and controls",
                "description": "Treat cockpit geometry, controls and communication provisions as configuration-specific evidence.",
                "questions": [
                  {
                    "text": "What drawings or interior photographs establish the pilot and rear-crew positions for this configuration?",
                    "kind": "provenance",
                    "id": "cockpit-layout-and-controls-q01"
                  },
                  {
                    "text": "Which controls and communication provisions belonged to each crew position, and which changed during service?",
                    "kind": "definition",
                    "id": "cockpit-layout-and-controls-q02"
                  }
                ]
              }
            ]
          }
        ]
      },
      {
        "id": "cyclone-installation-and-performance",
        "name": "Cyclone installation and performance",
        "description": "Connect propulsion identity to supported aircraft performance and loading.",
        "rationale": "Radial propulsion is an important A-12 distinction, but an engine-family name cannot establish ratings or operating limits.",
        "layers": [
          {
            "id": "engine-propeller-and-consumables",
            "name": "Engine, propeller and consumables",
            "description": "Identify the installed powerplant and the documentation governing its supporting systems.",
            "findings": [
              {
                "id": "cyclone-configuration-authority",
                "name": "Cyclone configuration authority",
                "description": "A contemporary Air Service newsletter identifies a Wright Cyclone installation; exact suffix, rating basis and propeller fit still require configuration-specific confirmation. [Air Service Newsletter, 1933](https://media.defense.gov/2011/Apr/20/2001330096/-1/-1/0/AFD-110420-012.pdf)",
                "questions": [
                  {
                    "text": "Which engine suffix, rated-power conditions and propeller model apply to the domestic A-12 configuration?",
                    "kind": "definition",
                    "id": "cyclone-configuration-authority-q01"
                  },
                  {
                    "text": "Which applicable instructions specify fuel, lubricant and inspection requirements for that installation?",
                    "kind": "provenance",
                    "id": "cyclone-configuration-authority-q02"
                  }
                ]
              }
            ]
          },
          {
            "id": "loading-and-flight-envelope",
            "name": "Loading and flight envelope",
            "description": "Separate descriptive specifications from substantiated limits.",
            "findings": [
              {
                "id": "conditioned-performance-values",
                "name": "Conditioned performance values",
                "description": "Accept speed, range, ceiling and mass figures only with their configuration, definitions and evidence quality recorded.",
                "questions": [
                  {
                    "text": "At what mass, altitude, engine setting and equipment fit was each performance figure measured or calculated?",
                    "kind": "measurement",
                    "id": "conditioned-performance-values-q01"
                  },
                  {
                    "text": "Which original documents establish loading and centre-of-gravity limits rather than merely listing typical weights?",
                    "kind": "provenance",
                    "id": "conditioned-performance-values-q02"
                  }
                ]
              }
            ]
          }
        ]
      },
      {
        "id": "attack-equipment-and-service-configuration",
        "name": "Attack equipment and service configuration",
        "description": "Represent historical mission equipment and dated service configurations.",
        "rationale": "Equipment fit affects identity, mass and authenticity, while service attribution must not be inferred from generic Shrike history.",
        "layers": [
          {
            "id": "documented-armament-fit",
            "name": "Documented armament fit",
            "description": "Establish historical installation arrangements without providing weapon employment procedures.",
            "findings": [
              {
                "id": "fixed-and-flexible-equipment-evidence",
                "name": "Fixed and flexible equipment evidence",
                "description": "The Smithsonian catalogues a 1935 War Department technical order concerning A-12 fixed-gun installation; its catalogue entry establishes a research lead, not reviewed technical contents. [Technical-order catalogue record](https://sova.si.edu/record/nasm.xxxx.0428/ref1676?q=Alphabets)",
                "questions": [
                  {
                    "text": "Which drawings establish fixed-gun locations, rear-cockpit armament and bomb-carriage arrangements for each configuration?",
                    "kind": "provenance",
                    "id": "fixed-and-flexible-equipment-evidence-q01"
                  },
                  {
                    "text": "Which reported payloads are alternative arrangements rather than loads that could be carried together?",
                    "kind": "boundary",
                    "id": "fixed-and-flexible-equipment-evidence-q02"
                  }
                ]
              }
            ]
          },
          {
            "id": "operator-and-date-attribution",
            "name": "Operator and date attribution",
            "description": "Associate equipment, markings and roles with documented service periods.",
            "findings": [
              {
                "id": "dated-service-configuration",
                "name": "Dated service configuration",
                "description": "Use dated unit records and photographs to distinguish delivered configuration, subsequent modification and training or display representation.",
                "questions": [
                  {
                    "text": "Which unit, operator and date are supported for the configuration being represented?",
                    "kind": "provenance",
                    "id": "dated-service-configuration-q01"
                  },
                  {
                    "text": "What evidence distinguishes operational equipment from training substitutions, removed equipment or later display additions?",
                    "kind": "boundary",
                    "id": "dated-service-configuration-q02"
                  }
                ]
              }
            ]
          }
        ]
      },
      {
        "id": "a-12-preservation-and-action-readiness",
        "name": "A-12 preservation and action readiness",
        "description": "Determine what evidence permits identification, conservation, movement or further technical assessment.",
        "rationale": "An archival image, surviving component and reconstructed aircraft require different conclusions; historical specifications alone establish no present operating authority.",
        "layers": [
          {
            "id": "authenticity-and-condition",
            "name": "Authenticity and condition",
            "description": "Assess original material and configuration-critical assemblies without assuming a surviving complete aircraft.",
            "findings": [
              {
                "id": "structure-and-fuel-system-evidence",
                "name": "Structure and fuel-system evidence",
                "description": "Prioritize wing bracing, gear attachments and fuel-system evidence in an assessment plan. A catalogued 1933 main-fuel-tank vibration test is a research lead, not evidence of a known defect. [Curtiss-Wright archive record](https://sova.si.edu/record/nasm.xxxx.0067/ref8695?i=2866&n=12&q=Airs&s=2856&t=D)",
                "questions": [
                  {
                    "text": "Which components have documented A-12 provenance, and which are replacements, reconstructions or uncertain attributions?",
                    "kind": "provenance",
                    "id": "structure-and-fuel-system-evidence-q01"
                  },
                  {
                    "text": "What qualified inspection evidence addresses deterioration of bracing, gear attachments and fuel-system components before handling?",
                    "kind": "action",
                    "id": "structure-and-fuel-system-evidence-q02"
                  }
                ]
              }
            ]
          },
          {
            "id": "permitted-actions-and-document-gaps",
            "name": "Permitted actions and document gaps",
            "description": "Match each proposed action to the evidence and authority it requires.",
            "findings": [
              {
                "id": "conservation-versus-operational-readiness",
                "name": "Conservation versus operational readiness",
                "description": "Record separately whether evidence supports cataloguing, static conservation, movement, powered testing or flight assessment.",
                "questions": [
                  {
                    "text": "Which proposed action is supported by the object's condition assessment and applicable technical documentation?",
                    "kind": "action",
                    "id": "conservation-versus-operational-readiness-q01"
                  },
                  {
                    "text": "What additional specialist assessment and jurisdiction-specific authority would be required before powered testing or flight?",
                    "kind": "action",
                    "id": "conservation-versus-operational-readiness-q02"
                  }
                ]
              }
            ]
          }
        ]
      },
      {
        "id": "evidence-and-external-alignment",
        "name": "Evidence and external alignment",
        "description": "What the world already says about this thing, gathered so the model can be checked against it.",
        "rationale": "A model that cannot be lined up against existing standards, identifiers and practice cannot be adopted by anyone who already uses them.",
        "layers": [
          {
            "id": "reported-evidence",
            "name": "Reported evidence",
            "description": "Findings from the breadth pass, kept separate from the structural claims.",
            "findings": [
              {
                "id": "evidence-confidence-notes",
                "name": "Check these first",
                "description": "Recalled without web access and unsourced; every item is a lead to verify.",
                "evidence": [
                  "This entry describes an aircraft type, not an individual surviving airframe.",
                  "Dimensions are approximate recall; production totals, engine subvariants, performance figures and operator modifications should be checked against historical technical records.",
                  "The hazards listed are operational risks, not claims of documented type-specific defects."
                ],
                "questions": [
                  {
                    "id": "evidence-confidence-notes-q01",
                    "text": "Which of these check these first hold for the sense of Curtiss A-12 Shrike this model covers, and on what evidence?",
                    "kind": "provenance"
                  }
                ]
              },
              {
                "id": "evidence-identifiers",
                "name": "Identifiers and schemes",
                "description": "Recalled without web access and unsourced; every item is a lead to verify.",
                "evidence": [
                  {
                    "scheme": "United States Army aircraft designation system",
                    "value_or_pattern": "A-12",
                    "note": "The designation identifies an attack aircraft type; it is unrelated to the later Lockheed A-12 reconnaissance aircraft."
                  },
                  {
                    "scheme": "Curtiss manufacturer model number",
                    "value_or_pattern": "Model 60",
                    "note": "Manufacturer designation associated with the A-12 Shrike."
                  }
                ],
                "questions": [
                  {
                    "id": "evidence-identifiers-q01",
                    "text": "Which of these identifiers and schemes hold for the sense of Curtiss A-12 Shrike this model covers, and on what evidence?",
                    "kind": "provenance"
                  }
                ]
              },
              {
                "id": "evidence-real-world-use",
                "name": "Real-world use",
                "description": "Recalled without web access and unsourced; every item is a lead to verify.",
                "evidence": [
                  "United States Army Air Corps ground-attack service.",
                  "Chinese military ground-attack operations during the Second Sino-Japanese War."
                ],
                "questions": [
                  {
                    "id": "evidence-real-world-use-q01",
                    "text": "Which of these real-world use hold for the sense of Curtiss A-12 Shrike this model covers, and on what evidence?",
                    "kind": "provenance"
                  }
                ]
              },
              {
                "id": "evidence-measurements",
                "name": "Typical measurements",
                "description": "Recalled without web access and unsourced; every item is a lead to verify.",
                "evidence": [
                  {
                    "quantity": "Wingspan",
                    "typical_range": "Approximately 13.4",
                    "unit": "m"
                  },
                  {
                    "quantity": "Crew complement",
                    "typical_range": "2",
                    "unit": "people"
                  }
                ],
                "questions": [
                  {
                    "id": "evidence-measurements-q01",
                    "text": "Which of these typical measurements hold for the sense of Curtiss A-12 Shrike this model covers, and on what evidence?",
                    "kind": "provenance"
                  }
                ]
              },
              {
                "id": "evidence-failure-modes-and-hazards",
                "name": "Failure modes and hazards",
                "description": "Recalled without web access and unsourced; every item is a lead to verify.",
                "evidence": [
                  "Low-altitude attack operations exposed the aircraft to ground fire and terrain-collision hazards.",
                  "Failure of its single engine required an immediate forced-landing response.",
                  "Carried bombs and machine-gun ammunition presented explosive and handling hazards."
                ],
                "questions": [
                  {
                    "id": "evidence-failure-modes-and-hazards-q01",
                    "text": "Which of these failure modes and hazards hold for the sense of Curtiss A-12 Shrike this model covers, and on what evidence?",
                    "kind": "provenance"
                  }
                ]
              },
              {
                "id": "evidence-regional-variation",
                "name": "Regional variation",
                "description": "Recalled without web access and unsourced; every item is a lead to verify.",
                "evidence": [
                  "The type served with both American and Chinese military aviation; operator equipment and service histories should be distinguished."
                ],
                "questions": [
                  {
                    "id": "evidence-regional-variation-q01",
                    "text": "Which of these regional variation hold for the sense of Curtiss A-12 Shrike this model covers, and on what evidence?",
                    "kind": "provenance"
                  }
                ]
              },
              {
                "id": "evidence-neighbours",
                "name": "Neighbouring kinds and how to tell them apart",
                "description": "Recalled without web access and unsourced; every item is a lead to verify.",
                "evidence": [
                  {
                    "name": "Curtiss A-8",
                    "difference": "The predecessor used a liquid-cooled inline engine, whereas the A-12 used an air-cooled radial engine."
                  },
                  {
                    "name": "Lockheed A-12",
                    "difference": "A later high-altitude, supersonic reconnaissance aircraft from a different manufacturer, sharing only the A-12 designation."
                  },
                  {
                    "name": "Curtiss SB2C Helldiver",
                    "difference": "A later carrier-based dive bomber sometimes associated with the Shrike name in Army service, rather than this 1930s fixed-undercarriage attack aircraft."
                  }
                ],
                "questions": [
                  {
                    "id": "evidence-neighbours-q01",
                    "text": "Which of these neighbouring kinds and how to tell them apart hold for the sense of Curtiss A-12 Shrike this model covers, and on what evidence?",
                    "kind": "provenance"
                  }
                ]
              }
            ]
          }
        ]
      }
    ]
  },
  "openQuestions": [
    "What manufacturer records settle the relationship between domestic A-12 aircraft and export Shrikes, including model numbers, engine differences and registry boundaries?",
    "Which original specifications resolve conflicting engine suffixes, power ratings, aircraft heights and empty-versus-loaded mass figures?",
    "What primary installation records settle differing accounts of gun locations, rear-armament counts and alternative bomb-carriage capacities?",
    "Which A-12 manuals and technical-order revisions can actually be obtained and read, and what inspection limits or protective provisions do they document?",
    "What authenticated original airframes or components survive, and what evidence supports their provenance, condition and permissible handling?"
  ],
  "statistics": {
    "bundles": 6,
    "layers": 11,
    "findings": 17,
    "questions": 27
  }
}
