{
  "vercy": "1.0-draft",
  "publication": {
    "status": "research-draft",
    "adjudicationStatus": "unreviewed",
    "publishableCanonical": false,
    "generatedAt": "2026-09-12T11:05:53Z",
    "providers": [
      "Codex"
    ],
    "breadth": "recalled by Codex without web access - no source was read",
    "missingProviders": [],
    "pass": 2,
    "cost": {
      "grok": {
        "seconds": 27.4,
        "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: 01a0954a-736f-7573-9e42-e553504772f5\n--------\nuser\nDescribe what is already known about one registered thing. Answer as JSON only, no prose around it.\n\nThing: M939 Truck\nSense to describe: (none recorded)\nDomain code: PHY.OBJ\nAlso known as: (none)\n\n\nContext for this batch of 1001 things:\n# Batch 044: 1001 regi",
        "usd": 0.0,
        "recall": true
      },
      "codex": {
        "seconds": 73.9,
        "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: 01a0954a-737d-7c72-8d87-ad0702975b2b\n--------\nuser\nYou are drafting a Vercy meta-model for one registered thing. Answer as JSON only, no prose around it.\n\nThing: M939 Truck\nRegistry id: vr.tr.m939-truck\nPlane / domain: PHY / PHY.OBJ\nRegistry definition: (none recorded)\nNames folded into this entry: (none)\n\n\nCo"
      }
    },
    "enrichment": {
      "pass": 3,
      "engine": "claude",
      "producedAt": "2026-10-06T12:00:00Z",
      "ingestedAt": "2026-10-06T08:52:34+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-Q238576",
    "registryId": "vr.tr.m939-truck",
    "name": "M939 Truck",
    "version": "0.1.0-research.1",
    "entryKind": "thing",
    "family": "Thing Registry",
    "domain": [
      "PHY.OBJ"
    ],
    "status": "research-draft"
  },
  "canonicalUrl": "https://ver.cy/models/thing/q238576/",
  "model": {
    "registry_id": "vr.tr.m939-truck",
    "name": "M939 Truck",
    "purpose": "Enable an AI agent to identify an M939-family truck configuration, assess its documented condition and determine which transport, support or maintenance actions its equipment and limits permit.",
    "definition": "The M939 is a family of U.S. military diesel-powered, three-axle, six-wheel-drive trucks in the 5-short-ton payload class, produced in cargo, dump, tractor, wrecker and other configurations.",
    "scope_statement": "This draft interprets vr.tr.m939-truck as the M939 family of military 5-ton, 6x6 diesel trucks, including M939, M939A1 and M939A2 series and their mission variants; it owns family-specific recognition and assessment requirements, while individual vehicle records supply observations.",
    "in_scope": [
      "Family membership, complete variant designation and configuration evidence",
      "Installed powertrain, running gear, controls and operating states",
      "Mission body, attachments, load limits and transport envelope",
      "Configuration-specific inspection, maintenance and serviceability",
      "Applicable technical instructions, modifications and operating restrictions"
    ],
    "out_of_scope": [
      "Generic truck principles already owned by a broader vehicle model",
      "Separate models for each serialized truck or every family variant",
      "Cargo contents, passenger identities and transport mission planning",
      "Independent models of trailers, engines and recovery equipment",
      "Fleet ownership, procurement history and driver qualification records"
    ],
    "distinguishing_features": [
      "Require a complete vehicle designation and corroborating identification evidence; a military appearance or 5-ton label alone cannot distinguish the M939 family from other truck families.",
      "Check documented membership in the M939, M939A1 or M939A2 series of 5-ton, 6x6 diesel trucks. These series are explicitly covered by [Army/Air Force TM 9-2320-272-10](https://www.nsndepot.com/Library/TM/TM-9-2320-272-10).",
      "Distinguish the family name from mission designations: the operator manual includes cargo, dump, tractor, expansible-van and medium-wrecker variants. Verify the actual body against the full designation using [TM 9-2320-272-10](https://www.nsndepot.com/Library/TM/TM-9-2320-272-10).",
      "Use installed engine, transmission, wheel arrangement and tire-inflation equipment to corroborate the declared series; conflicting components require modification evidence rather than automatic reclassification."
    ],
    "characteristics": [
      {
        "name": "Complete variant designation",
        "kind": "category",
        "unit_or_values": "Full military model designation, including A1 or A2 suffix where applicable; unknown",
        "why_it_matters": "Selects the relevant equipment description, limits and maintenance instructions."
      },
      {
        "name": "Configuration evidence",
        "kind": "relation",
        "unit_or_values": "Identification plate, serial record, equipment inspection and modification documentation",
        "why_it_matters": "Separates declared identity from the configuration actually present."
      },
      {
        "name": "Mission body",
        "kind": "category",
        "unit_or_values": "Cargo; dump; tractor; expansible van; medium wrecker; documented conversion; unknown",
        "why_it_matters": "Determines the truck's usable interfaces and task-specific restrictions."
      },
      {
        "name": "Installed powertrain",
        "kind": "relation",
        "unit_or_values": "Engine, transmission and transfer-case identities linked to applicable specifications",
        "why_it_matters": "Prevents service requirements and operating limits from being transferred between incompatible configurations."
      },
      {
        "name": "Tire and inflation configuration",
        "kind": "category",
        "unit_or_values": "Tire size, axle fitment and inflation-system presence and type",
        "why_it_matters": "Supports configuration-specific pressure, loading and mobility assessments."
      },
      {
        "name": "Permitted and actual loading",
        "kind": "measurement",
        "unit_or_values": "kg for payload, gross mass, axle loads and relevant coupling loads, with operating conditions",
        "why_it_matters": "The family class label alone does not establish an individual mission's allowable load."
      },
      {
        "name": "Travel and deployed envelope",
        "kind": "measurement",
        "unit_or_values": "m for length, width, height, wheelbase and deployed clearances",
        "why_it_matters": "Determines route, carrier, workspace and storage compatibility."
      },
      {
        "name": "Brake-system readiness",
        "kind": "state",
        "unit_or_values": "Verified serviceable; restricted; unserviceable; unverified, with pressure readings in kPa where applicable",
        "why_it_matters": "Provides an evidence-based movement constraint."
      },
      {
        "name": "Mission-equipment readiness",
        "kind": "state",
        "unit_or_values": "Stowed; deployed; operating; isolated; defective; absent; unknown",
        "why_it_matters": "Separates ability to drive from ability to use a body or attachment."
      },
      {
        "name": "Maintenance applicability",
        "kind": "relation",
        "unit_or_values": "Technical manual edition, change level, applicable service instructions and inspection records",
        "why_it_matters": "Makes serviceability decisions traceable to the installed configuration."
      }
    ],
    "affordances": [
      "Resolve a reported M939 truck to a documented family variant and flag conflicting identification evidence.",
      "Compare a proposed load and route with the truck's verified configuration and operating limits.",
      "Determine whether the installed body and attachments support a requested cargo, towing or support task.",
      "Assess movement and equipment-use readiness from applicable inspections and unresolved defects.",
      "Select configuration-matched maintenance references and consumables.",
      "Identify missing evidence that prevents a defensible operating decision."
    ],
    "agent_conduct": {
      "may": [
        "Describe the truck family, its variants and service history.",
        "Check a surplus truck's registration and inspection status for its civilian owner."
      ],
      "must_not": [
        "Drive or move a truck without an authorised, licensed driver in control.",
        "Operate one on public roads without the registration and inspection the law requires.",
        "Remove or bypass braking or stability modifications.",
        "Assist in using it to carry weapons or for attacks."
      ],
      "requires_human": [
        "Any decision to drive on public roads or carry passengers in the cargo bed."
      ]
    },
    "ethics": {
      "considerations": [
        "Ex-military trucks in civilian hands can be dangerous if their known handling issues are ignored."
      ],
      "affected_parties": [
        "Drivers and passengers",
        "Other road users",
        "Service members"
      ]
    },
    "owners": {
      "steward": "The armed forces or registered civilian keeper; vehicle registers record surplus trucks in civilian use.",
      "master_systems": [
        "National vehicle registers"
      ]
    },
    "visual_identification": [
      "A large three-axle truck with a flat-fronted cab and a squared bonnet.",
      "Six large off-road tyres and military drab paint, often with stencilled unit markings."
    ],
    "failure_modes_and_hazards": [
      "The series became known for rollover accidents, which led to braking modifications.",
      "Heavy weight and high centre of gravity make sharp manoeuvres dangerous."
    ],
    "what_it_is_for": [
      "These military trucks are used for transporting personnel, cargo and equipment in logistics operations.",
      "Different configurations support hauling, towing, recovery and other transport support roles on roads and rough terrain."
    ],
    "standards_and_regulation": [
      "Federal Supply Class 2320, issued within the United States Department of Defense Federal Supply Classification system, covers wheeled trucks and truck tractors of this family."
    ]
  },
  "sources": [
    {
      "id": "wikidata",
      "title": "Wikidata item Q238576: M939 Truck",
      "url": "https://www.wikidata.org/wiki/Q238576",
      "url_status": "live",
      "what_it_supports": "identity and sense of the item",
      "checked_by": "wikidata-api"
    },
    {
      "id": "wikipedia-en",
      "title": "Wikipedia: M939 series 5-ton 6×6 truck",
      "url": "https://en.wikipedia.org/wiki/M939_series_5-ton_6%C3%976_truck",
      "url_status": "live",
      "what_it_supports": "general description of the item",
      "checked_by": "wikidata-api sitelink"
    }
  ],
  "structure": {
    "bundles": [
      {
        "id": "family-and-variant-identity",
        "name": "Family and variant identity",
        "description": "Establish how a truck belongs to the M939 family and which configuration governs its assessment.",
        "rationale": "The family label encompasses different series and mission bodies whose requirements cannot be assumed interchangeable.",
        "layers": [
          {
            "id": "designation-evidence",
            "name": "Designation evidence",
            "description": "Connect the reported family name to a complete, evidenced designation.",
            "findings": [
              {
                "id": "verified-family-membership",
                "name": "Verified family membership",
                "description": "Record the full designation and supporting identification evidence, preserving uncertainty when records and observations disagree.",
                "questions": [
                  {
                    "text": "What full model designation and series suffix appear on the truck's identification evidence?",
                    "kind": "definition",
                    "id": "verified-family-membership-q01"
                  },
                  {
                    "text": "Which plate, serial record or authoritative equipment reference corroborates M939-family membership?",
                    "kind": "provenance",
                    "id": "verified-family-membership-q02"
                  }
                ]
              }
            ]
          },
          {
            "id": "configuration-divergence",
            "name": "Configuration divergence",
            "description": "Distinguish original variant identity from subsequent equipment changes.",
            "findings": [
              {
                "id": "documented-installed-configuration",
                "name": "Documented installed configuration",
                "description": "Identify body, powertrain and running-gear changes that affect which variant instructions remain applicable.",
                "questions": [
                  {
                    "text": "Which installed components or body features differ from the documented variant configuration?",
                    "kind": "boundary",
                    "id": "documented-installed-configuration-q01"
                  },
                  {
                    "text": "What modification records establish the compatibility and revised limits of those changes?",
                    "kind": "provenance",
                    "id": "documented-installed-configuration-q02"
                  }
                ]
              }
            ]
          }
        ]
      },
      {
        "id": "powertrain-and-ground-mobility",
        "name": "Powertrain and ground mobility",
        "description": "Represent the installed diesel propulsion system and the configuration that transfers power to the ground.",
        "rationale": "Series identification alone is insufficient when replacement components or altered tire equipment change operating requirements.",
        "layers": [
          {
            "id": "propulsion-and-drive-controls",
            "name": "Propulsion and drive controls",
            "description": "Identify propulsion components and the states governing vehicle movement.",
            "findings": [
              {
                "id": "matched-powertrain-instructions",
                "name": "Matched powertrain instructions",
                "description": "Link installed engine, transmission and transfer-case identities to their approved fuels, fluids, controls and operating limits.",
                "questions": [
                  {
                    "text": "Which engine, transmission and transfer case are installed, and which technical instructions cover that combination?",
                    "kind": "provenance",
                    "id": "matched-powertrain-instructions-q01"
                  },
                  {
                    "text": "Which selected drive states, indications or faults constrain movement under those instructions?",
                    "kind": "action",
                    "id": "matched-powertrain-instructions-q02"
                  }
                ]
              }
            ]
          },
          {
            "id": "tires-and-terrain-settings",
            "name": "Tires and terrain settings",
            "description": "Connect axle tire fitment and inflation equipment to the intended surface and load.",
            "findings": [
              {
                "id": "verified-tire-operating-envelope",
                "name": "Verified tire operating envelope",
                "description": "Record tire specification, condition, pressure and any installed central tire inflation system without assuming equipment from the family name.",
                "questions": [
                  {
                    "text": "What tire sizes, axle arrangements, measured pressures and inflation equipment are present?",
                    "kind": "measurement",
                    "id": "verified-tire-operating-envelope-q01"
                  },
                  {
                    "text": "Which documented pressure and speed limits apply to this tire configuration, load and terrain?",
                    "kind": "action",
                    "id": "verified-tire-operating-envelope-q02"
                  }
                ]
              }
            ]
          }
        ]
      },
      {
        "id": "mission-body-and-load-envelope",
        "name": "Mission body and load envelope",
        "description": "Describe what the actual M939 variant can carry, couple to or support.",
        "rationale": "Cargo, tractor, dump, van and wrecker configurations need different evidence of task compatibility.",
        "layers": [
          {
            "id": "body-and-attachment-capability",
            "name": "Body and attachment capability",
            "description": "Identify the fitted mission body and usable task interfaces.",
            "findings": [
              {
                "id": "equipment-dependent-affordances",
                "name": "Equipment-dependent affordances",
                "description": "Associate capabilities only with verified equipment, including coupling, dumping, lifting or winching equipment where fitted.",
                "questions": [
                  {
                    "text": "Which mission body, couplings and powered attachments are actually installed?",
                    "kind": "definition",
                    "id": "equipment-dependent-affordances-q01"
                  },
                  {
                    "text": "Which requested actions are supported by their documented ratings and present condition?",
                    "kind": "action",
                    "id": "equipment-dependent-affordances-q02"
                  }
                ]
              }
            ]
          },
          {
            "id": "mass-and-clearance-limits",
            "name": "Mass and clearance limits",
            "description": "Assess loading and physical fit in the configuration proposed for use.",
            "findings": [
              {
                "id": "configuration-specific-load-assessment",
                "name": "Configuration-specific load assessment",
                "description": "Compare measured or substantiated loading and dimensions with variant-specific limits, distinguishing travel and deployed states.",
                "questions": [
                  {
                    "text": "What are the actual gross mass, axle loads, relevant coupling loads and travel dimensions?",
                    "kind": "measurement",
                    "id": "configuration-specific-load-assessment-q01"
                  },
                  {
                    "text": "Which documented limits apply to the proposed road, cross-country, towing or deployed operation?",
                    "kind": "boundary",
                    "id": "configuration-specific-load-assessment-q02"
                  }
                ]
              }
            ]
          }
        ]
      },
      {
        "id": "movement-and-equipment-safety",
        "name": "Movement and equipment safety",
        "description": "Assess whether the truck and its mission equipment meet applicable conditions for the next action.",
        "rationale": "A running engine does not establish brake readiness, stability or safe mission-equipment configuration.",
        "layers": [
          {
            "id": "braking-and-directional-control",
            "name": "Braking and directional control",
            "description": "Assess brakes, steering and relevant warnings against the installed system's instructions.",
            "findings": [
              {
                "id": "movement-readiness-evidence",
                "name": "Movement readiness evidence",
                "description": "Record applicable brake and steering inspection results, including any installed brake-control modifications.",
                "questions": [
                  {
                    "text": "Which brake-system configuration and modifications are installed, and what evidence verifies them?",
                    "kind": "provenance",
                    "id": "movement-readiness-evidence-q01"
                  },
                  {
                    "text": "Do applicable checks identify a defect or warning that prohibits or restricts movement?",
                    "kind": "action",
                    "id": "movement-readiness-evidence-q02"
                  }
                ]
              }
            ]
          },
          {
            "id": "stability-and-equipment-securing",
            "name": "Stability and equipment securing",
            "description": "Account for load placement, body position and equipment restraints before travel or deployment.",
            "findings": [
              {
                "id": "safe-body-state",
                "name": "Safe body state",
                "description": "Record body-specific securing devices, supports and interlocks where fitted, and distinguish verified engagement from assumed protection.",
                "questions": [
                  {
                    "text": "What are the positions and verified states of applicable body locks, restraints, supports and interlocks?",
                    "kind": "measurement",
                    "id": "safe-body-state-q01"
                  },
                  {
                    "text": "Do load placement, slope and equipment deployment satisfy the applicable stability and securing requirements?",
                    "kind": "action",
                    "id": "safe-body-state-q02"
                  }
                ]
              }
            ]
          }
        ]
      },
      {
        "id": "serviceability-and-applicable-authority",
        "name": "Serviceability and applicable authority",
        "description": "Connect inspection findings and service requirements to the correct M939 technical references.",
        "rationale": "Mixed configurations and historical manual revisions make traceable applicability essential to maintenance and use decisions.",
        "layers": [
          {
            "id": "inspection-and-consumables",
            "name": "Inspection and consumables",
            "description": "Record preventive checks, defects and component-specific service needs.",
            "findings": [
              {
                "id": "configuration-matched-maintenance",
                "name": "Configuration-matched maintenance",
                "description": "Organize inspection evidence and service requirements around installed components, including leaks, tire damage, corrosion and attachment faults as assessment categories rather than claimed failure frequencies.",
                "questions": [
                  {
                    "text": "Which inspections or services are due, and which unresolved findings affect the requested operation?",
                    "kind": "action",
                    "id": "configuration-matched-maintenance-q01"
                  },
                  {
                    "text": "Which fuel, lubricant, coolant, filter and replacement-part specifications apply to the installed components?",
                    "kind": "provenance",
                    "id": "configuration-matched-maintenance-q02"
                  }
                ]
              }
            ]
          },
          {
            "id": "technical-and-use-authority",
            "name": "Technical and use authority",
            "description": "Separate technical serviceability evidence from authorization for a particular operating context.",
            "findings": [
              {
                "id": "traceable-operating-basis",
                "name": "Traceable operating basis",
                "description": "Record issuing body, edition and applicability of technical instructions, plus relevant use restrictions; military identification alone does not establish civilian road approval.",
                "questions": [
                  {
                    "text": "Which Army or Air Force manual editions, changes and modification instructions govern this configuration?",
                    "kind": "provenance",
                    "id": "traceable-operating-basis-q01"
                  },
                  {
                    "text": "What additional inspection or authorization evidence is required for the proposed jurisdiction and use?",
                    "kind": "boundary",
                    "id": "traceable-operating-basis-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 is recalled information, not source-checked research; no standards or manual identifiers are asserted.",
                  "Verify payload, dimensions, engine, tire arrangement and equipment against the exact model and A-series revision.",
                  "The 5-ton figure identifies the nominal family class and should not be treated as the allowable load for every body configuration or operating condition."
                ],
                "questions": [
                  {
                    "id": "evidence-confidence-notes-q01",
                    "text": "Which of these check these first hold for the sense of M939 Truck this model covers, and on what evidence?",
                    "kind": "provenance"
                  }
                ]
              },
              {
                "id": "evidence-kinds",
                "name": "Kinds and varieties",
                "description": "Recalled without web access and unsourced; every item is a lead to verify.",
                "evidence": [
                  "Cargo trucks",
                  "Dump trucks",
                  "Truck tractors",
                  "Wreckers",
                  "Expansible van trucks",
                  "Chassis supplied for specialized bodies"
                ],
                "questions": [
                  {
                    "id": "evidence-kinds-q01",
                    "text": "Which of these kinds and varieties hold for the sense of M939 Truck 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": "U.S. military equipment model designation",
                    "value_or_pattern": "M939 series; individual models have M-prefixed numbers and may carry A1 or A2 suffixes",
                    "note": "M939 denotes the family; a specific configuration and revision require the individual model designation."
                  },
                  {
                    "scheme": "National Stock Number (NSN)",
                    "value_or_pattern": "13 digits, commonly formatted XXXX-XX-XXX-XXXX",
                    "note": "Specific truck configurations and replacement items have separate stock numbers; there is no single NSN for the entire family."
                  }
                ],
                "questions": [
                  {
                    "id": "evidence-identifiers-q01",
                    "text": "Which of these identifiers and schemes hold for the sense of M939 Truck 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": [
                  "Transporting military cargo and personnel",
                  "Towing trailers and, with tractor variants, semitrailers",
                  "Recovering disabled vehicles with wrecker variants",
                  "Moving and tipping bulk materials with dump variants",
                  "Providing mobile workshop or equipment accommodation in van variants"
                ],
                "questions": [
                  {
                    "id": "evidence-real-world-use-q01",
                    "text": "Which of these real-world use hold for the sense of M939 Truck 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": "Nominal cross-country payload class",
                    "typical_range": "5",
                    "unit": "U.S. short tons"
                  },
                  {
                    "quantity": "Nominal cross-country payload class, converted",
                    "typical_range": "approximately 4536",
                    "unit": "kg"
                  }
                ],
                "questions": [
                  {
                    "id": "evidence-measurements-q01",
                    "text": "Which of these typical measurements hold for the sense of M939 Truck 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": [
                  "Rollover during abrupt steering, excessive cornering speed or travel across steep side slopes, especially with a high or shifting load",
                  "Loss of braking capability or vehicle immobilization from air-brake system faults",
                  "Tire damage or incorrect inflation reducing traction and handling stability",
                  "Crushing and entanglement hazards during winching, recovery and dump-body operation",
                  "Unsecured cargo or improperly coupled trailers causing loss of control or injury"
                ],
                "questions": [
                  {
                    "id": "evidence-failure-modes-and-hazards-q01",
                    "text": "Which of these failure modes and hazards hold for the sense of M939 Truck 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": [
                  "Exported and surplus vehicles may have locally modified bodies, lighting and equipment.",
                  "Civilian road registration and operating requirements depend on jurisdiction and vehicle configuration."
                ],
                "questions": [
                  {
                    "id": "evidence-regional-variation-q01",
                    "text": "Which of these regional variation hold for the sense of M939 Truck 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": "M809 series",
                    "difference": "A preceding U.S. military 5-ton 6×6 truck family; the M939 series introduced an automatic transmission and other system changes."
                  },
                  {
                    "name": "M923",
                    "difference": "An individual cargo-truck model within the M939 family, rather than the family as a whole."
                  },
                  {
                    "name": "M35 series",
                    "difference": "A separate military 6×6 truck family in the smaller 2½-short-ton payload class."
                  }
                ],
                "questions": [
                  {
                    "id": "evidence-neighbours-q01",
                    "text": "Which of these neighbouring kinds and how to tell them apart hold for the sense of M939 Truck this model covers, and on what evidence?",
                    "kind": "provenance"
                  }
                ]
              }
            ]
          }
        ]
      }
    ]
  },
  "openQuestions": [
    "Does the registry intend the complete M939 family or only the unsuffixed series, and does an existing Vercy world model already own that concept?",
    "What authoritative configuration matrix establishes engine, transmission, tire and central tire inflation differences across the series and documented modifications?",
    "What verified payload, axle, towing, dimensional and terrain limits apply to each included mission variant and operating configuration?",
    "Which brake-system updates, safety notices and body-specific interlocks apply to the vehicles being assessed, and what evidence verifies installation?",
    "Which technical publication revisions and jurisdiction-specific operating requirements govern the intended users' trucks?"
  ],
  "statistics": {
    "bundles": 6,
    "layers": 11,
    "findings": 18,
    "questions": 28
  }
}
