{
    "model": {
        "rank": 2442,
        "code": "thing-q45782",
        "model_id": "vr.tr.aquarium",
        "name": "aquarium",
        "purpose": "Enable an AI agent to recognise an aquarium, assess its readiness and condition as a contained aquatic habitat, and determine which interventions are appropriate for its occupants and configuration.",
        "family": "Thing Registry",
        "category": "Physical world and living systems",
        "status": "research-draft",
        "kind": "thing",
        "plane": "PHY",
        "domain": "PHY.OBJ",
        "industry": "",
        "version": "",
        "url": "/models/thing/q45782/",
        "tier": 2,
        "score": 105,
        "payload": {
            "layer": "wikidata",
            "aliases": [
                "Touch pool",
                "Ecosphere",
                "community aquarium",
                "fish bowl",
                "marine aquarium",
                "freshwater aquarium",
                "Abyss Box",
                "MacQuarium",
                "quarantine tank",
                "brackish-water aquarium",
                "reef aquarium"
            ],
            "aliasCount": 11,
            "merged": 11,
            "knownIn": 105,
            "facets": null,
            "markers": [],
            "lexicalClass": "",
            "senseRank": null,
            "alsoRegisteredAs": null,
            "source": {
                "dataset": "wikidata",
                "item": "Q45782",
                "url": "https://www.wikidata.org/wiki/Q45782",
                "license": "CC0 1.0"
            }
        },
        "research": {
            "vercy": "1.0-draft",
            "publication": {
                "status": "research-draft",
                "adjudicationStatus": "unreviewed",
                "publishableCanonical": false,
                "generatedAt": "2026-09-07T09:18:39Z",
                "providers": [
                    "Codex"
                ],
                "missingProviders": [
                    "Grok"
                ],
                "pass": 2,
                "cost": {
                    "grok": {
                        "usd": null,
                        "turns": null,
                        "seconds": 7.7,
                        "error": "Error: Internal error: {\n  \"message\": \"API error (status 402 Payment Required): Grok Build usage balance exhausted\",\n  \"http_status\": 402\n}",
                        "retried": true
                    },
                    "codex": {
                        "seconds": 82.2,
                        "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: 01a07b28-5b60-75e2-8db4-0c4fd3b85b44\n--------\nuser\nYou are drafting a Vercy meta-model for one registered thing. Answer as JSON only, no prose around it.\n\nThing: aquarium\nRegistry id: vr.tr.aquarium\nPlane / domain: PHY / PHY.OBJ\nRegistry definition: (none recorded)\nNames folded into this entry: (none)\n\nA Vercy"
                    }
                }
            },
            "metaModel": {
                "id": "THING-Q45782",
                "registryId": "vr.tr.aquarium",
                "name": "aquarium",
                "version": "0.1.0-research.1",
                "entryKind": "thing",
                "family": "Thing Registry",
                "domain": [
                    "PHY.OBJ"
                ],
                "status": "research-draft"
            },
            "canonicalUrl": "https://ver.cy/models/thing/q45782/",
            "model": {
                "registry_id": "vr.tr.aquarium",
                "name": "aquarium",
                "purpose": "Enable an AI agent to recognise an aquarium, assess its readiness and condition as a contained aquatic habitat, and determine which interventions are appropriate for its occupants and configuration.",
                "definition": "",
                "scope_statement": "This model owns an individual aquarium as an integrated physical enclosure and managed aquatic environment, including its containment, water, habitat arrangement, installed life support and operational constraints; whether the registry also intends aquarium facilities remains unresolved.",
                "in_scope": [
                    "Tank boundaries, usable water volume, containment integrity and access",
                    "Water regime, observed conditions and occupant-specific operating targets",
                    "Installed filtration, circulation, aeration, lighting and temperature control",
                    "Aquatic occupants as requirements and loads on the shared habitat",
                    "Substrate, habitat structures and usable swimming or attachment space",
                    "Commissioning, routine care, isolation and responses to deteriorating conditions"
                ],
                "out_of_scope": [
                    "Aquarium buildings, visitor services and institutional operations",
                    "Species taxonomy and general biological knowledge",
                    "Individual animal medical records and diagnosis",
                    "Standalone equipment design and repair procedures",
                    "Building structure, electrical supply and plumbing beyond aquarium interfaces",
                    "Ponds and production aquaculture installations unless registry research establishes their inclusion"
                ],
                "distinguishing_features": [
                    "Its intended function includes maintaining an aquatic habitat; a transparent vessel used only for storing water does not pass this test.",
                    "A sustained water-filled habitat is central to its intended operation; a primarily terrestrial terrarium does not pass this test.",
                    "It has an identifiable containment boundary and managed water environment; the room or institution housing several tanks is a different modelling scale.",
                    "Recognition uses intended configuration as well as present contents, allowing an empty aquarium undergoing commissioning or maintenance to retain its identity.",
                    "Mixed land-and-water enclosures require a boundary decision based on their intended habitat function rather than the presence of water alone."
                ],
                "characteristics": [
                    {
                        "name": "Intended habitat role",
                        "kind": "category",
                        "unit_or_values": "display, quarantine, breeding, rearing, planted habitat, other declared role",
                        "why_it_matters": "Determines which occupants, equipment and interventions fit the aquarium's purpose."
                    },
                    {
                        "name": "Water regime",
                        "kind": "category",
                        "unit_or_values": "freshwater, brackish, marine, other specified regime, undetermined",
                        "why_it_matters": "Establishes the context for interpreting water measurements and compatibility."
                    },
                    {
                        "name": "Working water volume",
                        "kind": "measurement",
                        "unit_or_values": "L, with measurement or estimation method and inclusion of connected vessels",
                        "why_it_matters": "Supports interpretation of water changes, treatment quantities and system capacity."
                    },
                    {
                        "name": "Containment condition",
                        "kind": "state",
                        "unit_or_values": "unassessed, apparently intact, suspected leak, confirmed leak, damaged",
                        "why_it_matters": "Constrains filling, continued operation and the urgency of protective action."
                    },
                    {
                        "name": "Water temperature",
                        "kind": "measurement",
                        "unit_or_values": "°C, with sampling location, time and observed variation",
                        "why_it_matters": "Allows comparison with requirements of the actual occupants."
                    },
                    {
                        "name": "Water chemistry observations",
                        "kind": "measurement",
                        "unit_or_values": "Parameter-specific values and units, including pH, salinity, dissolved oxygen and nitrogen compounds where relevant",
                        "why_it_matters": "Makes habitat suitability assessable without assuming universal safe thresholds."
                    },
                    {
                        "name": "Occupant composition",
                        "kind": "relation",
                        "unit_or_values": "Linked organisms or groups, counts or estimates, life stages and requirement sources",
                        "why_it_matters": "Connects habitat decisions to the living population actually present."
                    },
                    {
                        "name": "Life-support availability",
                        "kind": "state",
                        "unit_or_values": "Per function: operating, degraded, stopped, intentionally absent, unknown",
                        "why_it_matters": "Identifies missing functions and limits actions during equipment failures."
                    },
                    {
                        "name": "Biological processing readiness",
                        "kind": "state",
                        "unit_or_values": "unassessed, establishing, demonstrated under recorded load, disrupted",
                        "why_it_matters": "Prevents tank age or water clarity from being treated as proof of readiness."
                    },
                    {
                        "name": "Hydraulic connectivity",
                        "kind": "relation",
                        "unit_or_values": "Connected tanks, sumps, filters and supply or drain paths, with isolation points",
                        "why_it_matters": "Defines which water volume and other habitats an intervention can affect."
                    }
                ],
                "affordances": [
                    "Assess whether filling, commissioning or introducing proposed occupants is supported by recorded evidence.",
                    "Measure and trend water conditions against documented requirements for the current habitat.",
                    "Adjust installed life-support settings within established operating constraints.",
                    "Plan water changes, cleaning and habitat rearrangement around occupant needs and system dependencies.",
                    "Evaluate stocking changes against compatibility, usable space and demonstrated processing capacity.",
                    "Isolate connected water paths or initiate an established contingency procedure when containment or life support deteriorates."
                ]
            },
            "sources": [],
            "structure": {
                "bundles": [
                    {
                        "id": "containment-and-water-boundary",
                        "name": "Containment and water boundary",
                        "description": "Defines the enclosure and the connected water system being assessed.",
                        "rationale": "Aquarium identity, water quantities and intervention effects depend on both physical containment and hydraulic connections.",
                        "layers": [
                            {
                                "id": "tank-envelope",
                                "name": "Tank envelope",
                                "description": "Records the vessel's geometry, usable capacity and ability to retain water.",
                                "findings": [
                                    {
                                        "id": "usable-and-retained-water",
                                        "name": "Usable and retained water",
                                        "description": "Record working water volume separately from nominal capacity, together with evidence about panels, seams, penetrations and support.",
                                        "questions": [
                                            {
                                                "text": "What water volume is present at the operating level after accounting for substrate and other displacement?",
                                                "kind": "measurement",
                                                "id": "usable-and-retained-water-q01"
                                            },
                                            {
                                                "text": "What inspection or operating evidence supports the current containment assessment?",
                                                "kind": "provenance",
                                                "id": "usable-and-retained-water-q02"
                                            }
                                        ]
                                    }
                                ]
                            },
                            {
                                "id": "connected-water-paths",
                                "name": "Connected water paths",
                                "description": "Identifies external vessels and water routes that extend the aquarium's operational boundary.",
                                "findings": [
                                    {
                                        "id": "shared-water-and-isolation",
                                        "name": "Shared water and isolation",
                                        "description": "Record connected sumps, tanks, filters, overflows and drains, including intended isolation and power-loss behaviour.",
                                        "questions": [
                                            {
                                                "text": "Which connected vessels share water with this aquarium and belong within its assessed system volume?",
                                                "kind": "boundary",
                                                "id": "shared-water-and-isolation-q01"
                                            },
                                            {
                                                "text": "How can flow be stopped or isolated, and what evidence establishes water levels when circulation loses power?",
                                                "kind": "action",
                                                "id": "shared-water-and-isolation-q02"
                                            }
                                        ]
                                    }
                                ]
                            }
                        ]
                    },
                    {
                        "id": "water-regime-and-condition",
                        "name": "Water regime and condition",
                        "description": "Connects measured water properties to the intended habitat and its occupants.",
                        "rationale": "An aquarium's apparent clarity does not establish whether its water conditions support its intended use.",
                        "layers": [
                            {
                                "id": "habitat-water-targets",
                                "name": "Habitat water targets",
                                "description": "Defines the intended water regime and the evidence behind operating ranges.",
                                "findings": [
                                    {
                                        "id": "requirements-and-target-conflicts",
                                        "name": "Requirements and target conflicts",
                                        "description": "Record parameter targets with their sources and identify unresolved conflicts among occupant requirements.",
                                        "questions": [
                                            {
                                                "text": "What water regime and operating ranges are intended for this aquarium's actual occupants and life stages?",
                                                "kind": "definition",
                                                "id": "requirements-and-target-conflicts-q01"
                                            },
                                            {
                                                "text": "Which sources justify these ranges, and where do the occupants' requirements fail to overlap?",
                                                "kind": "provenance",
                                                "id": "requirements-and-target-conflicts-q02"
                                            }
                                        ]
                                    }
                                ]
                            },
                            {
                                "id": "observations-and-trends",
                                "name": "Observations and trends",
                                "description": "Makes water observations interpretable across sampling locations, methods and time.",
                                "findings": [
                                    {
                                        "id": "interpretable-water-readings",
                                        "name": "Interpretable water readings",
                                        "description": "Record relevant readings with units, test methods, sampling context and uncertainty, distinguishing individual measurements from sustained conditions.",
                                        "questions": [
                                            {
                                                "text": "What are the latest relevant temperature, pH, salinity, oxygen and nitrogen-compound readings, with exact analyte conventions and units?",
                                                "kind": "measurement",
                                                "id": "interpretable-water-readings-q01"
                                            },
                                            {
                                                "text": "How do sampling location, time, test limitations and recent interventions affect interpretation of the observed trend?",
                                                "kind": "measurement",
                                                "id": "interpretable-water-readings-q02"
                                            }
                                        ]
                                    }
                                ]
                            }
                        ]
                    },
                    {
                        "id": "aquatic-life-support",
                        "name": "Aquatic life support",
                        "description": "Records how the aquarium maintains water movement, processing and environmental control.",
                        "rationale": "Equipment presence alone does not demonstrate that the required habitat functions are being delivered.",
                        "layers": [
                            {
                                "id": "filtration-and-processing",
                                "name": "Filtration and processing",
                                "description": "Distinguishes installed filtration from demonstrated waste-processing performance.",
                                "findings": [
                                    {
                                        "id": "processing-under-actual-load",
                                        "name": "Processing under actual load",
                                        "description": "Record mechanical, biological and chemical filtration roles where present, together with evidence of performance under the recorded feeding and occupant load.",
                                        "questions": [
                                            {
                                                "text": "Which filtration functions are provided, by what media or processes, and where does water pass through them?",
                                                "kind": "definition",
                                                "id": "processing-under-actual-load-q01"
                                            },
                                            {
                                                "text": "What observations demonstrate processing readiness under the current load, and what changes may have disrupted it?",
                                                "kind": "provenance",
                                                "id": "processing-under-actual-load-q02"
                                            }
                                        ]
                                    }
                                ]
                            },
                            {
                                "id": "flow-temperature-and-light",
                                "name": "Flow, temperature and light",
                                "description": "Records delivery and control of circulation, gas exchange, heating, cooling and illumination.",
                                "findings": [
                                    {
                                        "id": "delivered-environmental-functions",
                                        "name": "Delivered environmental functions",
                                        "description": "Describe the functions actually delivered across the occupied habitat, their controls and their dependencies.",
                                        "questions": [
                                            {
                                                "text": "What observations establish flow distribution, gas exchange, temperature variation and lighting duration or intensity where occupants live?",
                                                "kind": "measurement",
                                                "id": "delivered-environmental-functions-q01"
                                            },
                                            {
                                                "text": "Which controls may be adjusted, within what documented limits, and which functions become unavailable after a power or equipment failure?",
                                                "kind": "action",
                                                "id": "delivered-environmental-functions-q02"
                                            }
                                        ]
                                    }
                                ]
                            }
                        ]
                    },
                    {
                        "id": "occupants-and-habitat-fit",
                        "name": "Occupants and habitat fit",
                        "description": "Relates the living population to available habitat and shared environmental capacity.",
                        "rationale": "Aquarium suitability depends on who occupies it and how they use its space, rather than water volume alone.",
                        "layers": [
                            {
                                "id": "population-and-compatibility",
                                "name": "Population and compatibility",
                                "description": "Records occupant groups and the requirements relevant to coexistence.",
                                "findings": [
                                    {
                                        "id": "current-and-proposed-population",
                                        "name": "Current and proposed population",
                                        "description": "Link current and proposed occupants to identification confidence, abundance, life stage and evidence about compatibility.",
                                        "questions": [
                                            {
                                                "text": "Which animals, plants and other intentionally maintained organisms are present, in what numbers and life stages, and with what identification confidence?",
                                                "kind": "measurement",
                                                "id": "current-and-proposed-population-q01"
                                            },
                                            {
                                                "text": "What evidence supports or challenges their coexistence, including environmental requirements, predation, aggression and feeding access?",
                                                "kind": "provenance",
                                                "id": "current-and-proposed-population-q02"
                                            }
                                        ]
                                    }
                                ]
                            },
                            {
                                "id": "inhabitable-space",
                                "name": "Inhabitable space",
                                "description": "Describes the usable habitat created by dimensions, substrate and internal structures.",
                                "findings": [
                                    {
                                        "id": "habitat-access-and-constraints",
                                        "name": "Habitat access and constraints",
                                        "description": "Record swimming space, refuges, attachment areas, substrate and access to relevant water zones, including hazards created by the arrangement.",
                                        "questions": [
                                            {
                                                "text": "What usable dimensions, refuges, substrate conditions and attachment surfaces are available to each occupant group?",
                                                "kind": "measurement",
                                                "id": "habitat-access-and-constraints-q01"
                                            },
                                            {
                                                "text": "Which rearrangements or additions are supported by occupant requirements, and which could create entrapment, escape or loss of essential habitat?",
                                                "kind": "action",
                                                "id": "habitat-access-and-constraints-q02"
                                            }
                                        ]
                                    }
                                ]
                            }
                        ]
                    },
                    {
                        "id": "care-and-intervention-readiness",
                        "name": "Care and intervention readiness",
                        "description": "Records the aquarium's operating phase and the evidence needed to select and review interventions.",
                        "rationale": "Aquarium care changes a coupled living environment, so actions must account for readiness, recent disturbances and effects across shared water.",
                        "layers": [
                            {
                                "id": "commissioning-and-routine-care",
                                "name": "Commissioning and routine care",
                                "description": "Connects commissioning, feeding, cleaning and water replacement to current system condition.",
                                "findings": [
                                    {
                                        "id": "care-plan-and-state-transitions",
                                        "name": "Care plan and state transitions",
                                        "description": "Record operating phase, recent care and the conditions required before stocking or materially changing the habitat.",
                                        "questions": [
                                            {
                                                "text": "Is the aquarium empty, commissioning, occupied, temporarily isolated or being decommissioned, and what evidence supports that state?",
                                                "kind": "definition",
                                                "id": "care-plan-and-state-transitions-q01"
                                            },
                                            {
                                                "text": "What feeding, replacement-water preparation, water-change and filter-care actions are due, and what conditions must be checked before carrying them out?",
                                                "kind": "action",
                                                "id": "care-plan-and-state-transitions-q02"
                                            }
                                        ]
                                    }
                                ]
                            },
                            {
                                "id": "disturbance-and-recovery",
                                "name": "Disturbance and recovery",
                                "description": "Supports responses to leaks, equipment outages, unsuitable water conditions and suspected contamination.",
                                "findings": [
                                    {
                                        "id": "bounded-response-and-follow-up",
                                        "name": "Bounded response and follow-up",
                                        "description": "Record observed disturbance, affected occupants and connected systems, available response procedures and evidence required to assess recovery.",
                                        "questions": [
                                            {
                                                "text": "Which established response applies to the observed disturbance, and what isolation, backup support or temporary holding capacity is available?",
                                                "kind": "action",
                                                "id": "bounded-response-and-follow-up-q01"
                                            },
                                            {
                                                "text": "What follow-up measurements and occupant observations are required before declaring recovery or reconnecting isolated water systems?",
                                                "kind": "measurement",
                                                "id": "bounded-response-and-follow-up-q02"
                                            }
                                        ]
                                    }
                                ]
                            }
                        ]
                    }
                ]
            },
            "openQuestions": [
                "Does vr.tr.aquarium denote an individual habitat enclosure, an aquarium facility, or both, and does an existing world model already own either concept?",
                "Where should the registry draw boundaries among aquariums, paludariums, aquatic research vessels, live-food holding tanks and aquaculture systems?",
                "Which authoritative sources should establish occupant-specific water targets and resolve incompatible requirements within a shared aquarium?",
                "What evidence is sufficient to establish biological processing readiness and capacity for different aquarium configurations and proposed stocking changes?",
                "Which interventions require specialist judgment, and what aquarium-specific evidence should determine escalation and recovery criteria?"
            ],
            "statistics": {
                "bundles": 5,
                "layers": 10,
                "findings": 10,
                "questions": 20
            }
        },
        "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 aquarium, record what state it is in, and decide what may be done with it.",
            "whatItIs": "Enable an AI agent to recognise an aquarium, assess its readiness and condition as a contained aquatic habitat, and determine which interventions are appropriate for its occupants and configuration.",
            "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: Touch pool, Ecosphere, community aquarium, fish bowl, marine aquarium, freshwater aquarium, Abyss Box, MacQuarium, quarantine tank, brackish-water aquarium, reef aquarium.",
                "11 finer distinctions are held as aliases rather than separate entries, because telling them apart needs a task that asks for it.",
                "Described in 105 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 aquarium, 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": [
                        "Touch pool",
                        "Ecosphere",
                        "community aquarium",
                        "fish bowl",
                        "marine aquarium",
                        "freshwater aquarium",
                        "Abyss Box",
                        "MacQuarium",
                        "quarantine tank",
                        "brackish-water aquarium",
                        "reef aquarium"
                    ]
                }
            ],
            "standing": "Described in 105 Wikipedia languages, which measures how widely it is written about rather than how important or how common it is. 11 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 aquarium from another, and a aquarium 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 aquarium, 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 aquarium, 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 aquarium 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 aquarium, 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 aquarium, 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 aquarium 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 aquarium 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 aquarium, 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 aquarium, 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 aquarium 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 aquarium from the things most often confused with it.",
                                        "questions": [
                                            {
                                                "id": "distinguishing-features-q01",
                                                "text": "What identifies and describes what distinguishes a aquarium, 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 aquarium, 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 aquarium 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 aquarium 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 aquarium, 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 aquarium, 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 aquarium 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 aquarium is built from and which parts are replaceable.",
                                        "questions": [
                                            {
                                                "id": "parts-and-materials-q01",
                                                "text": "What identifies and describes the composition of a aquarium, 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 aquarium, 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 aquarium 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 aquarium is judged and by whom.",
                                        "questions": [
                                            {
                                                "id": "condition-assessment-q01",
                                                "text": "What identifies and describes the condition of a aquarium, 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 aquarium, 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 aquarium 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 aquarium 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 aquarium is, and what that position is measured against.",
                                        "questions": [
                                            {
                                                "id": "position-and-frame-q01",
                                                "text": "What identifies and describes the location of a aquarium, 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 aquarium, 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 aquarium 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 aquarium 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 aquarium, 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 aquarium, 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 aquarium 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 aquarium 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 aquarium between them.",
                                        "questions": [
                                            {
                                                "id": "stages-and-transitions-q01",
                                                "text": "What identifies and describes the lifecycle of a aquarium, 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 aquarium, 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 aquarium 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 aquarium, how often and by whom.",
                                "findings": [
                                    {
                                        "id": "observation-record",
                                        "name": "Observation record",
                                        "description": "How an observation of a aquarium 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 aquarium, 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 aquarium, 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 aquarium 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 aquarium 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 aquarium 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 aquarium, 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 aquarium 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 aquarium 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 aquarium 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 aquarium 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 aquarium 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 aquarium, 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 aquarium 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 aquarium and how confident it is.",
                                        "questions": [
                                            {
                                                "id": "claim-provenance-q01",
                                                "text": "What identifies and describes a claim about a aquarium, 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 aquarium, 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 aquarium 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 aquarium is retired without being erased.",
                                        "questions": [
                                            {
                                                "id": "validity-and-supersession-q01",
                                                "text": "What identifies and describes the validity of a claim about a aquarium, 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 aquarium, 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 aquarium 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
            }
        }
    }
}