{
    "model": {
        "rank": 2069,
        "code": "thing-q47107",
        "model_id": "vr.tr.bucket",
        "name": "bucket",
        "purpose": "Enable an AI agent to recognise a bucket, assess whether it can safely contain and transport intended contents, and decide how it may be filled, carried, emptied, cleaned or stored.",
        "family": "Thing Registry",
        "category": "Physical world and living systems",
        "status": "research-draft",
        "kind": "thing",
        "plane": "PHY",
        "domain": "PHY.OBJ",
        "industry": "",
        "version": "",
        "url": "/models/thing/q47107/",
        "tier": 2,
        "score": 116,
        "payload": {
            "layer": "wikidata",
            "aliases": [
                "ice bucket",
                "KFC bucket",
                "Kubeł",
                "Kadja",
                "tsuri-chōzu",
                "Bagliulu",
                "Hemmoor bucket",
                "Groasis Waterboxx",
                "Samau",
                "fire sand bucket",
                "coal scuttle",
                "milk pail"
            ],
            "aliasCount": 12,
            "merged": 12,
            "knownIn": 116,
            "facets": null,
            "markers": [],
            "lexicalClass": "",
            "senseRank": null,
            "alsoRegisteredAs": "vr.tr.bucket",
            "source": {
                "dataset": "wikidata",
                "item": "Q47107",
                "url": "https://www.wikidata.org/wiki/Q47107",
                "license": "CC0 1.0"
            }
        },
        "research": {
            "vercy": "1.0-draft",
            "publication": {
                "status": "research-draft",
                "adjudicationStatus": "unreviewed",
                "publishableCanonical": false,
                "generatedAt": "2026-09-07T09:41:28Z",
                "providers": [
                    "Codex",
                    "Grok"
                ],
                "missingProviders": [],
                "pass": 2,
                "cost": {
                    "grok": {
                        "usd": 0.00963866,
                        "turns": 1,
                        "seconds": 134.6,
                        "error": null
                    },
                    "codex": {
                        "seconds": 84.5,
                        "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: 01a07b39-f93c-7c51-a448-6cb0c31dca3b\n--------\nuser\nYou are drafting a Vercy meta-model for one registered thing. Answer as JSON only, no prose around it.\n\nThing: bucket\nRegistry id: vr.tr.bucket\nPlane / domain: PHY / PHY.OBJ\nRegistry definition: (none recorded)\nNames folded into this entry: (none)\n\nA Vercy mod"
                    }
                }
            },
            "metaModel": {
                "id": "THING-Q47107",
                "registryId": "vr.tr.bucket",
                "name": "bucket",
                "version": "0.1.0-research.1",
                "entryKind": "thing",
                "family": "Thing Registry",
                "domain": [
                    "PHY.OBJ"
                ],
                "status": "research-draft"
            },
            "canonicalUrl": "https://ver.cy/models/thing/q47107/",
            "model": {
                "registry_id": "vr.tr.bucket",
                "name": "bucket",
                "purpose": "Enable an AI agent to recognise a bucket, assess whether it can safely contain and transport intended contents, and decide how it may be filled, carried, emptied, cleaned or stored.",
                "definition": "A hand-portable, open-topped rigid vessel, typically cylindrical or truncated-conical and fitted with a rim-spanning bail or equivalent handle, used to contain and carry a discrete charge of liquid or loose solid rather than to store it under a fitted shipping closure.",
                "scope_statement": "This model owns a physical bucket understood provisionally as a portable, open-topped vessel with a retaining base and walls, including its carrying features, closures and condition relevant to containment and handling.",
                "in_scope": [
                    "The bucket's body, base, mouth, rim and usable internal space",
                    "Handles, grips and their attachments to the bucket",
                    "Containment condition and suitability for specified contents",
                    "Filling, carrying, standing, pouring and emptying constraints",
                    "Bucket-specific lids, graduations, spouts and nesting features"
                ],
                "out_of_scope": [
                    "The identity, composition and hazards of substances placed in the bucket",
                    "Cleaning procedures and the wider sanitation system",
                    "Lifting machinery, conveyors and their operating controls",
                    "Storage rooms, shelving and transport routes",
                    "Digital storage buckets and software container abstractions"
                ],
                "distinguishing_features": [
                    "Check for a base and surrounding walls that retain intended contents when upright; a bottomless sleeve or frame does not meet this interpretation.",
                    "Check whether the main opening permits direct filling and emptying across much of the body width; a narrow-necked bottle or jerrycan needs a different vessel interpretation.",
                    "Check whether the vessel is intended to be moved with contents using its body, grips or carrying handle; a fixed basin is a neighbouring concept.",
                    "Use intended function and overall form together to distinguish a bucket from a bowl, tub, basket or waste bin; a handle or round shape alone is insufficient.",
                    "Check whether 'bucket' names a standalone vessel or a machine attachment for digging or conveying; this draft provisionally covers the standalone vessel."
                ],
                "characteristics": [
                    {
                        "name": "Body material and lining",
                        "kind": "category",
                        "unit_or_values": "Observed or documented material; coating or lining; unknown",
                        "why_it_matters": "Helps determine what compatibility evidence is needed and how damage should be interpreted."
                    },
                    {
                        "name": "Usable capacity",
                        "kind": "measurement",
                        "unit_or_values": "L, with fill reference and measurement method",
                        "why_it_matters": "Distinguishes practical filling capacity from nominal or brimful volume."
                    },
                    {
                        "name": "Opening and body dimensions",
                        "kind": "measurement",
                        "unit_or_values": "mm; internal depth, mouth dimensions and base dimensions",
                        "why_it_matters": "Determines whether intended contents, tools and cleaning implements fit."
                    },
                    {
                        "name": "Empty mass",
                        "kind": "measurement",
                        "unit_or_values": "kg",
                        "why_it_matters": "Contributes to the total mass that a person or handling device must support."
                    },
                    {
                        "name": "Documented load limit",
                        "kind": "measurement",
                        "unit_or_values": "kg, with applicable carrying configuration; unknown if undocumented",
                        "why_it_matters": "Prevents treating a volume marking as evidence of carrying strength."
                    },
                    {
                        "name": "Carrying arrangement",
                        "kind": "category",
                        "unit_or_values": "Bail handle, side handles, integral grips, no dedicated handle, other",
                        "why_it_matters": "Determines available ways to lift, carry and control the bucket."
                    },
                    {
                        "name": "Body and handle condition",
                        "kind": "state",
                        "unit_or_values": "Observed cracks, holes, deformation, corrosion, attachment looseness or no observed defect; inspection scope recorded",
                        "why_it_matters": "Supports separate judgments about containment and load support."
                    },
                    {
                        "name": "Containment performance",
                        "kind": "state",
                        "unit_or_values": "Retains, leaks, intentionally drains or untested for specified contents and conditions",
                        "why_it_matters": "A bucket may retain coarse solids while failing to retain liquid."
                    },
                    {
                        "name": "Contents suitability",
                        "kind": "relation",
                        "unit_or_values": "Bucket linked to intended contents and supporting compatibility evidence",
                        "why_it_matters": "Suitability depends on the particular contents, exposure conditions and intended use."
                    },
                    {
                        "name": "Current fill",
                        "kind": "measurement",
                        "unit_or_values": "L, kg or fill height in mm, with headspace where relevant",
                        "why_it_matters": "Supports decisions about adding contents, carrying and pouring."
                    },
                    {
                        "name": "Lid or attachment fit",
                        "kind": "relation",
                        "unit_or_values": "Compatible component, seating condition and documented closure function",
                        "why_it_matters": "Distinguishes a fitted cover from evidence of a sealed or transport-suitable closure."
                    },
                    {
                        "name": "Residue and use history",
                        "kind": "state",
                        "unit_or_values": "Known previous contents, observed residue, cleaning evidence or unknown",
                        "why_it_matters": "Can restrict reuse even when the bucket appears physically intact."
                    }
                ],
                "affordances": [
                    "Fill to a justified working level while preserving required headspace and load limits.",
                    "Hold specified contents when containment and compatibility evidence support the use.",
                    "Lift and carry using an assessed carrying arrangement.",
                    "Pour, scoop out or tip out contents using the available mouth, rim and grips.",
                    "Inspect, clean and dry the interior, rim and carrying attachments.",
                    "Fit a compatible lid or nest the empty bucket when its features and condition permit."
                ]
            },
            "sources": [
                {
                    "id": "wikipedia-bucket",
                    "title": "Bucket",
                    "url": "https://en.wikipedia.org/wiki/Bucket",
                    "what_it_supports": "Ordinary-language sense of the open portable vessel, typical materials and handles, and the distinction from machine and computing homonyms.",
                    "url_status": "live"
                },
                {
                    "id": "un-tdg-model-regulations",
                    "title": "Recommendations on the Transport of Dangerous Goods: Model Regulations",
                    "url": "https://unece.org/transport/dangerous-goods",
                    "what_it_supports": "Industrial pails treated as open-head packagings (design types such as 1H2 plastics and 1A2 steel) when used to ship regulated goods.",
                    "url_status": "blocked"
                },
                {
                    "id": "fda-21cfr-177-1520",
                    "title": "21 CFR 177.1520 Olefin polymers",
                    "url": "https://www.ecfr.gov/current/title-21/section-177.1520",
                    "what_it_supports": "Food-contact basis for common HDPE/PP pails and buckets used with food and some agricultural products in the United States.",
                    "url_status": "live"
                },
                {
                    "id": "eu-1935-2004",
                    "title": "Regulation (EC) No 1935/2004 on materials and articles intended to come into contact with food",
                    "url": "https://eur-lex.europa.eu/eli/reg/2004/1935/oj",
                    "what_it_supports": "European food-contact framework that governs food-grade buckets and pails placed on the EU market.",
                    "url_status": "live"
                }
            ],
            "structure": {
                "bundles": [
                    {
                        "id": "vessel-identity-and-capacity",
                        "name": "Vessel identity and capacity",
                        "description": "Establishes which physical vessel is being treated as a bucket and what can fit inside it.",
                        "rationale": "Bucket identity and useful capacity depend on intended use, opening geometry and fill reference rather than a name or volume label alone.",
                        "layers": [
                            {
                                "id": "bucket-boundary",
                                "name": "Bucket boundary",
                                "description": "Separates the standalone carrying vessel from neighbouring containers and other meanings of bucket.",
                                "findings": [
                                    {
                                        "id": "recognition-basis",
                                        "name": "Recognition basis",
                                        "description": "Record the observed vessel form and intended use supporting classification as a bucket.",
                                        "questions": [
                                            {
                                                "text": "What combination of retaining base, walls, broad opening and intended carrying use identifies this item as a bucket?",
                                                "kind": "definition",
                                                "id": "recognition-basis-q01"
                                            },
                                            {
                                                "text": "What evidence distinguishes this item from a tub, bowl, basket, waste bin or machine bucket?",
                                                "kind": "boundary",
                                                "id": "recognition-basis-q02"
                                            }
                                        ]
                                    }
                                ]
                            },
                            {
                                "id": "internal-space",
                                "name": "Internal space",
                                "description": "Describes the mouth, depth and volume available for the intended contents.",
                                "findings": [
                                    {
                                        "id": "capacity-and-fill-reference",
                                        "name": "Capacity and fill reference",
                                        "description": "Record nominal, measured and working capacities with their fill references and any uncertainty in graduations.",
                                        "questions": [
                                            {
                                                "text": "What volume fits to the brim, and what lower working fill level is justified for the intended use?",
                                                "kind": "measurement",
                                                "id": "capacity-and-fill-reference-q01"
                                            },
                                            {
                                                "text": "Where did the stated capacity and graduation accuracy come from, and have they been checked?",
                                                "kind": "provenance",
                                                "id": "capacity-and-fill-reference-q02"
                                            },
                                            {
                                                "text": "Do the mouth dimensions and internal depth admit the intended contents and any scoop or tool used to remove them?",
                                                "kind": "boundary",
                                                "id": "capacity-and-fill-reference-q03"
                                            }
                                        ]
                                    }
                                ]
                            }
                        ]
                    },
                    {
                        "id": "containment-and-contents-suitability",
                        "name": "Containment and contents suitability",
                        "description": "Assesses whether the body retains intended contents and whether contact with those contents is supported.",
                        "rationale": "A bucket's ability to hold one material does not establish its suitability for another, and past contents can constrain reuse.",
                        "layers": [
                            {
                                "id": "retaining-body",
                                "name": "Retaining body",
                                "description": "Examines the base, walls, seams and any intentional openings as a containment boundary.",
                                "findings": [
                                    {
                                        "id": "retention-evidence",
                                        "name": "Retention evidence",
                                        "description": "Record damage, openings and observations of retention for specified contents and conditions.",
                                        "questions": [
                                            {
                                                "text": "Are there cracks, holes, failed seams or intentional drainage openings in the base or walls?",
                                                "kind": "measurement",
                                                "id": "retention-evidence-q01"
                                            },
                                            {
                                                "text": "What inspection or test supports retention of the intended contents, at what fill level and for what duration?",
                                                "kind": "provenance",
                                                "id": "retention-evidence-q02"
                                            }
                                        ]
                                    }
                                ]
                            },
                            {
                                "id": "contact-and-reuse",
                                "name": "Contact and reuse",
                                "description": "Relates the bucket's material, lining and history to its proposed contents.",
                                "findings": [
                                    {
                                        "id": "supported-contents",
                                        "name": "Supported contents",
                                        "description": "Record the evidence and unresolved limits governing material contact and reuse.",
                                        "questions": [
                                            {
                                                "text": "What documentation supports contact between this bucket's material or lining and the intended contents at the proposed temperature and duration?",
                                                "kind": "provenance",
                                                "id": "supported-contents-q01"
                                            },
                                            {
                                                "text": "What previous contents, residues or unknown history could rule out the proposed reuse?",
                                                "kind": "boundary",
                                                "id": "supported-contents-q02"
                                            },
                                            {
                                                "text": "What cleaning, inspection or further evidence is needed before the bucket can receive these contents?",
                                                "kind": "action",
                                                "id": "supported-contents-q03"
                                            }
                                        ]
                                    }
                                ]
                            }
                        ]
                    },
                    {
                        "id": "loaded-support-and-carrying",
                        "name": "Loaded support and carrying",
                        "description": "Assesses how a filled bucket stands, is lifted and remains controlled during movement.",
                        "rationale": "A bucket can retain contents yet be unsuitable to carry because of load, handle condition, poor grip or instability.",
                        "layers": [
                            {
                                "id": "handle-and-load-path",
                                "name": "Handle and load path",
                                "description": "Connects the total carried mass to the grips, attachments and body supporting it.",
                                "findings": [
                                    {
                                        "id": "carrying-readiness",
                                        "name": "Carrying readiness",
                                        "description": "Record how the bucket will be held and what evidence supports that arrangement under the intended load.",
                                        "questions": [
                                            {
                                                "text": "What is the combined mass of the bucket and contents, and what documented load limit applies to the proposed carrying arrangement?",
                                                "kind": "measurement",
                                                "id": "carrying-readiness-q01"
                                            },
                                            {
                                                "text": "Are the handle, grip and attachment points secure and usable without observed cracking, loosening or interference?",
                                                "kind": "measurement",
                                                "id": "carrying-readiness-q02"
                                            },
                                            {
                                                "text": "Can the intended carrier maintain a controlled grip throughout lifting, movement and set-down?",
                                                "kind": "action",
                                                "id": "carrying-readiness-q03"
                                            }
                                        ]
                                    }
                                ]
                            },
                            {
                                "id": "standing-and-spill-control",
                                "name": "Standing and spill control",
                                "description": "Assesses base contact, fill level and contents movement during standing and carrying.",
                                "findings": [
                                    {
                                        "id": "upright-stability",
                                        "name": "Upright stability",
                                        "description": "Record the conditions under which the loaded bucket can stand or move without unacceptable tipping or spillage.",
                                        "questions": [
                                            {
                                                "text": "Does the base sit without rocking or deformation on the intended supporting surface?",
                                                "kind": "measurement",
                                                "id": "upright-stability-q01"
                                            },
                                            {
                                                "text": "What headspace or closure is needed to control spillage during the proposed movement?",
                                                "kind": "action",
                                                "id": "upright-stability-q02"
                                            },
                                            {
                                                "text": "What fill distribution, projecting contents or surface conditions make upright support uncertain?",
                                                "kind": "boundary",
                                                "id": "upright-stability-q03"
                                            }
                                        ]
                                    }
                                ]
                            }
                        ]
                    },
                    {
                        "id": "access-emptying-and-storage",
                        "name": "Access, emptying and storage",
                        "description": "Describes how the bucket releases its contents and how its mouth and body interact with lids and other buckets.",
                        "rationale": "Rim shape, grip placement, closure fit and nesting geometry affect whether a bucket can be emptied, covered and retrieved for reuse.",
                        "layers": [
                            {
                                "id": "controlled-emptying",
                                "name": "Controlled emptying",
                                "description": "Relates contents removal to the mouth, rim, spout and available support points.",
                                "findings": [
                                    {
                                        "id": "emptying-method",
                                        "name": "Emptying method",
                                        "description": "Record a workable removal method and any geometry or residue that prevents controlled or complete emptying.",
                                        "questions": [
                                            {
                                                "text": "Do the rim or spout and available grips support controlled pouring or tipping into the intended receiver?",
                                                "kind": "action",
                                                "id": "emptying-method-q01"
                                            },
                                            {
                                                "text": "What contents remain trapped at the base, seams or internal features after the proposed emptying method?",
                                                "kind": "measurement",
                                                "id": "emptying-method-q02"
                                            },
                                            {
                                                "text": "Can the interior be reached for scooping, inspection, cleaning and drying?",
                                                "kind": "action",
                                                "id": "emptying-method-q03"
                                            }
                                        ]
                                    }
                                ]
                            },
                            {
                                "id": "closure-and-nesting",
                                "name": "Closure and nesting",
                                "description": "Assesses removable covers and storage interactions with matching buckets.",
                                "findings": [
                                    {
                                        "id": "closure-function",
                                        "name": "Closure function",
                                        "description": "Record lid compatibility, seating and the specific function supported by evidence.",
                                        "questions": [
                                            {
                                                "text": "Which lid fits this rim, and are its seating surfaces and retaining features intact?",
                                                "kind": "boundary",
                                                "id": "closure-function-q01"
                                            },
                                            {
                                                "text": "What evidence establishes whether the fitted lid merely covers the opening or also provides a specified seal?",
                                                "kind": "provenance",
                                                "id": "closure-function-q02"
                                            }
                                        ]
                                    },
                                    {
                                        "id": "nesting-and-retrieval",
                                        "name": "Nesting and retrieval",
                                        "description": "Record whether empty buckets can be nested and separated without damage or obstruction.",
                                        "questions": [
                                            {
                                                "text": "Which bucket bodies nest together without handle interference, rim damage or excessive wedging?",
                                                "kind": "boundary",
                                                "id": "nesting-and-retrieval-q01"
                                            },
                                            {
                                                "text": "How can a nested bucket be separated while maintaining usable grips and avoiding damage?",
                                                "kind": "action",
                                                "id": "nesting-and-retrieval-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": [
                                            "Household or utility bucket (polymer, typically 5-15 L, open bail, reused on site)",
                                            "Industrial open-head pail (commonly the North American 5 US gallon / 19 L lidded shipping pail)",
                                            "Galvanized or tinplate metal bucket",
                                            "Mop bucket (often with wringer or divider)",
                                            "Fire bucket (sand or water; historically conical so it will not stand unused as a general pail)",
                                            "Well or draw bucket (rope or chain lift, often rounded or reinforced bottom)",
                                            "Food-grade or dairy pail (polymer or tinned steel specified for food contact)",
                                            "Collapsible or fabric bucket (textile or folding polymer, field and camping use)"
                                        ],
                                        "questions": [
                                            {
                                                "id": "evidence-kinds-q01",
                                                "text": "Which of these kinds and varieties hold for the sense of bucket 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": "Q47107",
                                                "note": "Item 'bucket' for the portable open vessel; machine-attachment and object-storage senses are separate items."
                                            },
                                            {
                                                "scheme": "Harmonized System (HS)",
                                                "value_or_pattern": "3923.90 or 3924.90 (plastics); 7323.99 or 7310.29 (iron or steel)",
                                                "note": "Plastic household buckets often fall in 3924; plastic packing pails in 3923; metal buckets split between table/kitchen articles and tanks/casks/drums depending on construction and intended packing use."
                                            },
                                            {
                                                "scheme": "UN packaging design type (TDG)",
                                                "value_or_pattern": "1H2 (open-head plastics), 1A2 (open-head steel)",
                                                "note": "Applies only when the pail is certified as a dangerous-goods packaging, not to ordinary household buckets."
                                            }
                                        ],
                                        "questions": [
                                            {
                                                "id": "evidence-identifiers-q01",
                                                "text": "Which of these identifiers and schemes hold for the sense of bucket 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": [
                                            "UN Recommendations on the Transport of Dangerous Goods, Model Regulations (UNECE) - open-head pail/drum design types, performance tests and marking when used as packagings.",
                                            "49 CFR Parts 171-178 (US DOT Pipeline and Hazardous Materials Safety Administration) - US implementation for UN-rated pails in hazardous-materials transport.",
                                            "21 CFR 177.1520 (US FDA) - olefin polymers for food-contact HDPE/PP buckets and pails.",
                                            "Regulation (EC) No 1935/2004 (European Parliament and Council) - food-contact materials for food-grade buckets on the EU market.",
                                            "ASTM D4504, Standard Specification for Molded Polyolefin Open-Head Pails (ASTM International) - construction and performance of moulded industrial pails."
                                        ],
                                        "questions": [
                                            {
                                                "id": "evidence-standards-and-regulation-q01",
                                                "text": "Which of these standards and regulation hold for the sense of bucket 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": [
                                            "Carrying and holding water, wash solutions and bulk dry goods in households, farms and workshops.",
                                            "Shipping and dispensing paints, adhesives, food ingredients, lubricants and agricultural chemicals in lidded 19 L industrial pails.",
                                            "Wet-cleaning: mop buckets with wringers in commercial janitorial work.",
                                            "Mixing small batches of mortar, plaster or feed on construction and farm sites.",
                                            "Historical and remaining fire practice: sand or water fire buckets at workshops, stations and ships.",
                                            "Drawing water from wells, cisterns and informal supplies, still routine where piped water is intermittent."
                                        ],
                                        "questions": [
                                            {
                                                "id": "evidence-real-world-use-q01",
                                                "text": "Which of these real-world use hold for the sense of bucket 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": "Nominal capacity",
                                                "typical_range": "5-15 household; 18.9 (5 US gal) industrial pail; about 1-25 for hand-carried forms",
                                                "unit": "L"
                                            },
                                            {
                                                "quantity": "Tare mass",
                                                "typical_range": "0.2-2.5",
                                                "unit": "kg"
                                            },
                                            {
                                                "quantity": "Overall height",
                                                "typical_range": "200-450",
                                                "unit": "mm"
                                            },
                                            {
                                                "quantity": "Mouth diameter",
                                                "typical_range": "200-350",
                                                "unit": "mm"
                                            },
                                            {
                                                "quantity": "Bail or handle working load (filled vessel)",
                                                "typical_range": "50-250",
                                                "unit": "N"
                                            }
                                        ],
                                        "questions": [
                                            {
                                                "id": "evidence-measurements-q01",
                                                "text": "Which of these typical measurements hold for the sense of bucket 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": [
                                            "Bail or handle detachment, wire fatigue, or the bail jumping a deformed rim, dropping a full load onto feet or floor.",
                                            "Drop or puncture of the bottom; HDPE environmental stress cracking from incompatible solvents or prolonged UV.",
                                            "Corrosion and pinholing of galvanized or tinned steel, especially at the chime.",
                                            "Lid and gasket leak on shipping pails, with chemical exposure, vapour and slip from spillage.",
                                            "Scald or splash injury from hot liquids; chemical incompatibility between contents and polymer.",
                                            "Nested-stack jamming or collapse in storage; trip hazard from an open bucket left in a walkway."
                                        ],
                                        "questions": [
                                            {
                                                "id": "evidence-failure-modes-and-hazards-q01",
                                                "text": "Which of these failure modes and hazards hold for the sense of bucket 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": [
                                            "United States trade usage treats the lidded 5 US gallon pail as the industrial unit and keeps 'bucket' for open household vessels; UK and much of the Commonwealth use 'bucket' for both and treat 'pail' as older or dairy language.",
                                            "Capacity is sold in US gallons in North America and in litres (10 L, 12 L, 15 L) in metric markets, so nominally similar products are not interchangeable by volume.",
                                            "In much of South Asia a plastic bucket is primary household water storage because of intermittent piped supply, not merely a carrying tool.",
                                            "Conical fire buckets remain more visible in older Commonwealth, railway and marine practice than in contemporary US fire codes, which have largely replaced them with extinguishers."
                                        ],
                                        "questions": [
                                            {
                                                "id": "evidence-regional-variation-q01",
                                                "text": "Which of these regional variation hold for the sense of bucket 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": "Pail (industrial shipping pail)",
                                                "difference": "In current North American trade a pail is typically a lidded, gasketed open-head package, often UN-marked; a bucket in the household sense is an open, reused carrying vessel. Test: fitted lid plus packaging marks versus bail-only open top."
                                            },
                                            {
                                                "name": "Drum",
                                                "difference": "A drum is a larger cylindrical packaging, commonly 200-220 L, often closed-head. Test: capacity well above hand-portable pail scale and drum-type closures (bung or bolted ring) rather than a carrying bail as the primary interface."
                                            },
                                            {
                                                "name": "Tub",
                                                "difference": "A tub is a wide, low vessel meant to stay in place (wash, bath, mix). Test: no walking bail designed for a carried load, and a low height-to-diameter ratio."
                                            },
                                            {
                                                "name": "Basin or bowl",
                                                "difference": "Shallow open vessels without a rim-spanning carrying bail. Test: depth and the absence of a handle meant to lift a filled charge and walk with it."
                                            },
                                            {
                                                "name": "Excavator or loader bucket",
                                                "difference": "An earthmoving attachment, not a portable vessel. Test: designed to pin to a machine arm or quick-hitch, with cutting edge or teeth, not to be carried by a person."
                                            },
                                            {
                                                "name": "Jug or canister",
                                                "difference": "Restricted opening and usually a pour spout or cap. Test: fill opening much smaller than the body, versus a full open top."
                                            },
                                            {
                                                "name": "Hopper",
                                                "difference": "Fixed or semi-fixed container that discharges through a bottom outlet. Test: designed bottom opening versus a closed bottom that is emptied by pouring or tipping."
                                            }
                                        ],
                                        "questions": [
                                            {
                                                "id": "evidence-neighbours-q01",
                                                "text": "Which of these neighbouring kinds and how to tell them apart hold for the sense of bucket this model covers, and on what evidence?",
                                                "kind": "provenance"
                                            }
                                        ]
                                    }
                                ]
                            }
                        ]
                    }
                ]
            },
            "openQuestions": [
                "Does vr.tr.bucket cover only standalone vessels, or also excavator, conveyor and other machine buckets?",
                "Where does the registry draw the boundary between bucket, pail, tub, basket and waste bin when their forms and uses overlap?",
                "Which existing Vercy world models already own this concept or reusable parts of its containment and handling assessment?",
                "Which authoritative sources support capacity, carrying-load and contents-suitability judgments for the bucket types the registry intends to cover?",
                "Should specialised forms such as collapsible, perforated or pressure-equipped buckets remain variants of this entry, and what additional assessment would each require?"
            ],
            "statistics": {
                "bundles": 5,
                "layers": 9,
                "findings": 17,
                "questions": 31
            }
        },
        "draft": {
            "generator": "vr.draft.v3",
            "status": "draft-generated",
            "researched": false,
            "archetype": "device, machine or tool",
            "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 bucket, record what state it is in, and decide what may be done with it.",
            "whatItIs": "Enable an AI agent to recognise a bucket, assess whether it can safely contain and transport intended contents, and decide how it may be filled, carried, emptied, cleaned or stored.",
            "characteristics": {
                "substance": "material",
                "origin": "manufactured",
                "agency": "inert",
                "mobility": "varies"
            },
            "whatYouCanDoWithIt": [
                "observed and measured"
            ],
            "distinguishingFeatures": [
                "Names folded into this entry, which a task may need to split apart again: ice bucket, KFC bucket, Kubeł, Kadja, tsuri-chōzu, Bagliulu, Hemmoor bucket, Groasis Waterboxx, Samau, fire sand bucket, coal scuttle, milk pail.",
                "12 finer distinctions are held as aliases rather than separate entries, because telling them apart needs a task that asks for it.",
                "Described in 116 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 bucket, 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"
            ],
            "howItIsRecognised": [
                "Recognised by form, by the arrangement of its controls, and by markings - a plate, a model number, a certification mark. Form alone rarely separates two models that do very different things."
            ],
            "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": [
                        "ice bucket",
                        "KFC bucket",
                        "Kubeł",
                        "Kadja",
                        "tsuri-chōzu",
                        "Bagliulu",
                        "Hemmoor bucket",
                        "Groasis Waterboxx",
                        "Samau",
                        "fire sand bucket",
                        "coal scuttle",
                        "milk pail"
                    ]
                }
            ],
            "standing": "Described in 116 Wikipedia languages, which measures how widely it is written about rather than how important or how common it is. 12 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 bucket from another, and a bucket 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 bucket, 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 bucket, 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 bucket 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 bucket, 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 bucket, 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 bucket 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 bucket 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 bucket, 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 bucket, 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 bucket 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 bucket from the things most often confused with it.",
                                        "questions": [
                                            {
                                                "id": "distinguishing-features-q01",
                                                "text": "What identifies and describes what distinguishes a bucket, 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 bucket, 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 bucket 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 bucket 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 bucket, 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 bucket, 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 bucket 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 bucket is built from and which parts are replaceable.",
                                        "questions": [
                                            {
                                                "id": "parts-and-materials-q01",
                                                "text": "What identifies and describes the composition of a bucket, 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 bucket, 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 bucket 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 bucket is judged and by whom.",
                                        "questions": [
                                            {
                                                "id": "condition-assessment-q01",
                                                "text": "What identifies and describes the condition of a bucket, 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 bucket, 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 bucket 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 bucket 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 bucket is, and what that position is measured against.",
                                        "questions": [
                                            {
                                                "id": "position-and-frame-q01",
                                                "text": "What identifies and describes the location of a bucket, 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 bucket, 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 bucket 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 bucket 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 bucket, 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 bucket, 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 bucket 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 bucket 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 bucket between them.",
                                        "questions": [
                                            {
                                                "id": "stages-and-transitions-q01",
                                                "text": "What identifies and describes the lifecycle of a bucket, 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 bucket, 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 bucket 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 bucket, how often and by whom.",
                                "findings": [
                                    {
                                        "id": "observation-record",
                                        "name": "Observation record",
                                        "description": "How an observation of a bucket 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 bucket, 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 bucket, 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 bucket is known, and what must it refuse?",
                                                "kind": "action",
                                                "answer_data": [
                                                    "permitted actions",
                                                    "preconditions",
                                                    "refusals",
                                                    "escalation"
                                                ]
                                            }
                                        ]
                                    }
                                ]
                            }
                        ]
                    },
                    {
                        "id": "function-and-principle",
                        "name": "Function and operating principle",
                        "description": "What bucket is for and how it achieves it.",
                        "rationale": "Two devices with the same name can work on different principles, and the principle is what predicts failure and constrains use.",
                        "layers": [
                            {
                                "id": "intended-function",
                                "name": "Intended function",
                                "description": "The job it does, and the jobs it is used for anyway.",
                                "findings": [
                                    {
                                        "id": "function-record",
                                        "name": "Function, principle and variants",
                                        "description": "What it does, how, and which variants do it differently.",
                                        "questions": [
                                            {
                                                "id": "function-record-q01",
                                                "text": "What function does bucket perform, on what operating principle, and which variants differ in that principle?",
                                                "kind": "definition"
                                            },
                                            {
                                                "id": "function-record-q02",
                                                "text": "What use falls outside the intended function but happens in practice?",
                                                "kind": "boundary"
                                            }
                                        ]
                                    }
                                ]
                            },
                            {
                                "id": "capacity-and-rating",
                                "name": "Capacity and rating",
                                "description": "The numbers that say what it can do and where it stops.",
                                "findings": [
                                    {
                                        "id": "ratings",
                                        "name": "Ratings and their conditions",
                                        "description": "Rated capacity, power, throughput and the conditions each assumes.",
                                        "questions": [
                                            {
                                                "id": "ratings-q01",
                                                "text": "What ratings characterise bucket, in what units, and under what stated conditions?",
                                                "kind": "measurement"
                                            },
                                            {
                                                "id": "ratings-q02",
                                                "text": "What happens beyond the rating - degradation, refusal, damage - and how is that detected?",
                                                "kind": "action"
                                            }
                                        ]
                                    }
                                ]
                            }
                        ]
                    },
                    {
                        "id": "operation-and-state",
                        "name": "Operation, controls and state",
                        "description": "How bucket is operated and what state it is in right now.",
                        "rationale": "An agent acting on a device needs its current state and the controls that change it, not just its specification.",
                        "layers": [
                            {
                                "id": "controls-and-modes",
                                "name": "Controls and modes",
                                "description": "What can be set, what that changes, and what is interlocked.",
                                "findings": [
                                    {
                                        "id": "control-surface",
                                        "name": "Control surface and interlocks",
                                        "description": "The settings available and the conditions that block them.",
                                        "questions": [
                                            {
                                                "id": "control-surface-q01",
                                                "text": "What controls and modes does bucket have, and what does each change?",
                                                "kind": "definition"
                                            },
                                            {
                                                "id": "control-surface-q02",
                                                "text": "Which actions are interlocked or forbidden in which state, and what must be true before acting?",
                                                "kind": "action"
                                            }
                                        ]
                                    }
                                ]
                            },
                            {
                                "id": "condition-and-maintenance",
                                "name": "Condition and maintenance",
                                "description": "Wear, service intervals, consumables and the line between working and broken.",
                                "findings": [
                                    {
                                        "id": "service-record",
                                        "name": "Condition, service and consumables",
                                        "description": "What is consumed, what is serviced, and how condition is judged.",
                                        "questions": [
                                            {
                                                "id": "service-record-q01",
                                                "text": "What consumables and service does bucket need, at what interval, and on whose authority?",
                                                "kind": "measurement"
                                            },
                                            {
                                                "id": "service-record-q02",
                                                "text": "What evidence separates a unit that is working from one that is out of service?",
                                                "kind": "boundary"
                                            }
                                        ]
                                    }
                                ]
                            }
                        ]
                    },
                    {
                        "id": "kind-model-unit",
                        "name": "Kind, model and unit",
                        "description": "Whether a claim about bucket is about the kind, a product line, or one physical unit.",
                        "rationale": "This is the boundary most often got wrong for made things, and getting it wrong mixes a catalogue entry with the machine in the yard.",
                        "layers": [
                            {
                                "id": "level-of-reference",
                                "name": "Level of reference",
                                "description": "The three levels and what belongs at each.",
                                "findings": [
                                    {
                                        "id": "level-rules",
                                        "name": "What belongs to kind, model and unit",
                                        "description": "Which properties are shared by all of them and which are not.",
                                        "questions": [
                                            {
                                                "id": "level-rules-q01",
                                                "text": "Which facts about bucket hold for every one of them, which for a model, and which only for one unit?",
                                                "kind": "boundary"
                                            },
                                            {
                                                "id": "level-rules-q02",
                                                "text": "What identifies an individual unit, and what should an agent do when it has only the kind?",
                                                "kind": "action"
                                            }
                                        ]
                                    }
                                ]
                            },
                            {
                                "id": "standards-and-conformity",
                                "name": "Standards and conformity",
                                "description": "The standards a working example must meet and who attests it.",
                                "findings": [
                                    {
                                        "id": "conformity",
                                        "name": "Standards, marks and attestation",
                                        "description": "Which standard applies, who certifies, and what the mark means.",
                                        "questions": [
                                            {
                                                "id": "conformity-q01",
                                                "text": "Which standards govern bucket, issued by whom, and what does conformity actually assert?",
                                                "kind": "provenance"
                                            },
                                            {
                                                "id": "conformity-q02",
                                                "text": "What may an agent conclude from a certification mark, and what may it not?",
                                                "kind": "boundary"
                                            }
                                        ]
                                    }
                                ]
                            }
                        ]
                    },
                    {
                        "id": "provenance-and-evidence",
                        "name": "Provenance, evidence and time",
                        "description": "Where every claim about a bucket 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 bucket and how confident it is.",
                                        "questions": [
                                            {
                                                "id": "claim-provenance-q01",
                                                "text": "What identifies and describes a claim about a bucket, 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 bucket, 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 bucket 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 bucket is retired without being erased.",
                                        "questions": [
                                            {
                                                "id": "validity-and-supersession-q01",
                                                "text": "What identifies and describes the validity of a claim about a bucket, 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 bucket, 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 bucket is known, and what must it refuse?",
                                                "kind": "action",
                                                "answer_data": [
                                                    "permitted actions",
                                                    "preconditions",
                                                    "refusals",
                                                    "escalation"
                                                ]
                                            }
                                        ]
                                    }
                                ]
                            }
                        ]
                    }
                ]
            },
            "statistics": {
                "bundles": 8,
                "layers": 17,
                "findings": 19,
                "questions": 51
            }
        }
    }
}