{
    "model": {
        "rank": 3865,
        "code": "thing-q134211",
        "model_id": "vr.tr.polo",
        "name": "polo",
        "purpose": "Enable an agent to recognise polo as a mounted team sport, assess its playing conditions and match state, and identify actions permitted by the applicable rules and horse-welfare constraints.",
        "family": "Thing Registry",
        "category": "Activities and processes",
        "status": "research-draft",
        "kind": "thing",
        "plane": "ACT",
        "domain": "ACT.ACT",
        "industry": "",
        "version": "",
        "url": "/models/thing/q134211/",
        "tier": 2,
        "score": 81,
        "payload": {
            "layer": "wikidata",
            "aliases": [
                "elephant polo",
                "beach polo",
                "cowboy polo",
                "Yak polo",
                "polo in Nigeria"
            ],
            "aliasCount": 5,
            "merged": 5,
            "knownIn": 81,
            "facets": null,
            "markers": [],
            "lexicalClass": "",
            "senseRank": null,
            "alsoRegisteredAs": null,
            "source": {
                "dataset": "wikidata",
                "item": "Q134211",
                "url": "https://www.wikidata.org/wiki/Q134211",
                "license": "CC0 1.0"
            }
        },
        "research": {
            "vercy": "1.0-draft",
            "publication": {
                "status": "research-draft",
                "adjudicationStatus": "unreviewed",
                "publishableCanonical": false,
                "generatedAt": "2026-09-09T18:56:18Z",
                "providers": [
                    "Codex"
                ],
                "breadth": "recalled by Codex without web access - no source was read",
                "missingProviders": [],
                "pass": 2,
                "cost": {
                    "grok": {
                        "seconds": 28.1,
                        "error": "Reading additional input from stdin...\nOpenAI Codex v0.153.4\n--------\nworkdir: R:\\02_PROJECTS\\02_Meta_Models_Platforms\\Ver.cy\\current\\thing-registry-backlog\nmodel: gpt-6-astra\nprovider: openai\napproval: never\nsandbox: read-only\nreasoning effort: none\nreasoning summaries: none\nsession id: 01a08786-4aac-7b52-9e57-a8405947d0ef\n--------\nuser\nDescribe what is already known about one registered thing. Answer as JSON only, no prose around it.\n\nThing: polo\nSense to describe: (none recorded)\nDomain code: ACT.ACT\nAlso known as: (none)\n\n\nContext for this batch of 695 things:\n# Batch 004: 1001 registered ",
                        "usd": 0,
                        "recall": true
                    },
                    "codex": {
                        "seconds": 58.5,
                        "error": "Reading additional input from stdin...\nOpenAI Codex v0.153.4\n--------\nworkdir: R:\\02_PROJECTS\\02_Meta_Models_Platforms\\Ver.cy\\current\\thing-registry-backlog\nmodel: gpt-6-astra\nprovider: openai\napproval: never\nsandbox: read-only\nreasoning effort: none\nreasoning summaries: none\nsession id: 01a08786-4a9f-7e83-8a8e-da5fa03bbdd3\n--------\nuser\nYou are drafting a Vercy meta-model for one registered thing. Answer as JSON only, no prose around it.\n\nThing: polo\nRegistry id: vr.tr.polo\nPlane / domain: ACT / ACT.ACT\nRegistry definition: (none recorded)\nNames folded into this entry: (none)\n\n\nContext for th"
                    }
                }
            },
            "metaModel": {
                "id": "THING-Q134211",
                "registryId": "vr.tr.polo",
                "name": "polo",
                "version": "0.1.0-research.1",
                "entryKind": "thing",
                "family": "Thing Registry",
                "domain": [
                    "ACT.ACT"
                ],
                "status": "research-draft"
            },
            "canonicalUrl": "https://ver.cy/models/thing/q134211/",
            "model": {
                "registry_id": "vr.tr.polo",
                "name": "polo",
                "purpose": "Enable an agent to recognise polo as a mounted team sport, assess its playing conditions and match state, and identify actions permitted by the applicable rules and horse-welfare constraints.",
                "definition": "Polo is a mounted team sport in which riders use long-handled mallets to drive a ball into the opposing team's goal, with play organised into timed periods called chukkas.",
                "scope_statement": "This model owns polo as an organised activity in which mounted players use mallets to direct a ball toward opposing goals, including its formats, horse-rider participation, play, officiating and welfare conditions; this interpretation remains provisional because vr.tr.polo has no recorded definition.",
                "in_scope": [
                    "Mounted polo and distinctions between its field and arena formats",
                    "Teams, player roles, eligibility and handicap arrangements",
                    "Horse-rider combinations, mount changes and readiness for play",
                    "Ball movement, scoring, periods of play and match progression",
                    "Right-of-way decisions, contact, penalties and stoppages",
                    "Playing-ground suitability, equipment and horse-welfare constraints"
                ],
                "out_of_scope": [
                    "Water polo, bicycle polo and other separately constituted sports sharing the name",
                    "Polo shirts and other clothing senses of polo",
                    "General equine biology, breeding and veterinary treatment",
                    "General riding instruction outside polo-specific demands",
                    "Club administration, sponsorship and sporting-business operations",
                    "Construction and maintenance of equestrian facilities beyond their suitability for polo"
                ],
                "distinguishing_features": [
                    "Players participate on horses; swimming or bicycle-based play indicates a neighbouring sport.",
                    "Players use mallets to propel a ball toward opposing goals; carrying or throwing the ball would require checking a different sport or variant.",
                    "Assessment of play must account for both the rider and the mount, including their combined movement and readiness.",
                    "Interpretation of contested movement involves polo-specific ball-line and right-of-way concepts whose application depends on the governing rules.",
                    "Field and arena differences are recorded as formats within the polo scope rather than silently treated as identical playing conditions."
                ],
                "characteristics": [
                    {
                        "name": "Polo format",
                        "kind": "category",
                        "unit_or_values": "Field; arena; another documented mounted format; unresolved",
                        "why_it_matters": "Determines which playing conditions and rules the agent must establish."
                    },
                    {
                        "name": "Governing rules",
                        "kind": "relation",
                        "unit_or_values": "Named authority, rulebook edition and competition modifications",
                        "why_it_matters": "Eligibility, permitted actions and match procedures require an identifiable authority."
                    },
                    {
                        "name": "Team composition",
                        "kind": "relation",
                        "unit_or_values": "Players assigned to each team, their roles and substitution status",
                        "why_it_matters": "Establishes who may participate and how team responsibilities are organised."
                    },
                    {
                        "name": "Handicap assessment",
                        "kind": "measurement",
                        "unit_or_values": "Player and team ratings on the specified authority's handicap scale",
                        "why_it_matters": "Supports competition eligibility and any applicable scoring adjustments without assuming a universal scale."
                    },
                    {
                        "name": "Active horse-rider combination",
                        "kind": "relation",
                        "unit_or_values": "Player, current mount and relevant participation history",
                        "why_it_matters": "Connects incidents, readiness and workload to the actual participants."
                    },
                    {
                        "name": "Match phase",
                        "kind": "state",
                        "unit_or_values": "Pre-match; active period; stoppage; interval; completed; abandoned",
                        "why_it_matters": "Controls whether play, inspection, substitution or a restart may proceed."
                    },
                    {
                        "name": "Score and playing time",
                        "kind": "measurement",
                        "unit_or_values": "Goals by team; declared adjustments; period index; time under the applicable clock convention",
                        "why_it_matters": "Allows the agent to interpret progress and completion under the selected format."
                    },
                    {
                        "name": "Mount readiness",
                        "kind": "state",
                        "unit_or_values": "Cleared; assessment required; withdrawn; unknown, with assessor and time",
                        "why_it_matters": "Prevents participation decisions from relying solely on tactical availability."
                    }
                ],
                "affordances": [
                    "Classify a proposed activity as mounted polo and identify its format.",
                    "Check a team's eligibility against the declared handicap and competition conditions.",
                    "Track horse-rider assignments, mount changes and recorded participation.",
                    "Reconstruct match progress from goals, clock events, stoppages and official decisions.",
                    "Flag movement or contact incidents for interpretation under the applicable polo rules.",
                    "Identify missing readiness evidence and route participation or resumption decisions to the responsible official."
                ]
            },
            "sources": [],
            "structure": {
                "bundles": [
                    {
                        "id": "polo-identity-and-rules",
                        "name": "Polo identity and rules",
                        "description": "Establishes the intended sense of polo and the rules governing a particular instance.",
                        "rationale": "The registry supplies no definition, and polo terminology alone does not establish format or authority.",
                        "layers": [
                            {
                                "id": "mounted-sport-boundary",
                                "name": "Mounted sport boundary",
                                "description": "Tests whether the activity belongs to the mounted polo concept.",
                                "findings": [
                                    {
                                        "id": "intended-polo-sense",
                                        "name": "Intended polo sense",
                                        "description": "The draft treats polo as the horse-mounted mallet-and-ball sport; registry provenance must confirm that interpretation.",
                                        "questions": [
                                            {
                                                "text": "Does the originating record for vr.tr.polo identify the mounted sport rather than another sense of polo?",
                                                "kind": "provenance",
                                                "id": "intended-polo-sense-q01"
                                            },
                                            {
                                                "text": "Which mounted variants belong within this entry, and which have separately registered identities?",
                                                "kind": "boundary",
                                                "id": "intended-polo-sense-q02"
                                            }
                                        ]
                                    }
                                ]
                            },
                            {
                                "id": "format-and-authority",
                                "name": "Format and authority",
                                "description": "Connects field or arena play to a documented governing ruleset.",
                                "findings": [
                                    {
                                        "id": "applicable-playing-conventions",
                                        "name": "Applicable playing conventions",
                                        "description": "Team size, ground dimensions, ball specifications and timing must be established for the chosen format rather than inherited from an unspecified version of polo.",
                                        "questions": [
                                            {
                                                "text": "Which authority, edition and competition amendments govern this instance?",
                                                "kind": "provenance",
                                                "id": "applicable-playing-conventions-q01"
                                            },
                                            {
                                                "text": "What team size, ground configuration, ball specification and period structure does that ruleset require?",
                                                "kind": "definition",
                                                "id": "applicable-playing-conventions-q02"
                                            }
                                        ]
                                    }
                                ]
                            }
                        ]
                    },
                    {
                        "id": "teams-riders-and-mounts",
                        "name": "Teams, riders and mounts",
                        "description": "Describes the human and equine participants whose eligibility and coordination make polo playable.",
                        "rationale": "A polo team cannot be assessed through its human roster alone; handicap conditions and mount assignments also matter.",
                        "layers": [
                            {
                                "id": "team-eligibility-and-handicap",
                                "name": "Team eligibility and handicap",
                                "description": "Establishes the roster and its relationship to competition entry conditions.",
                                "findings": [
                                    {
                                        "id": "rated-team-composition",
                                        "name": "Rated team composition",
                                        "description": "Player ratings and team assessment need a named rating system and date before they can support eligibility or scoring decisions.",
                                        "questions": [
                                            {
                                                "text": "Which ratings are recognised for each player in this format and competition?",
                                                "kind": "measurement",
                                                "id": "rated-team-composition-q01"
                                            },
                                            {
                                                "text": "How do the competition rules use those ratings to determine eligibility or starting-score adjustments?",
                                                "kind": "action",
                                                "id": "rated-team-composition-q02"
                                            }
                                        ]
                                    }
                                ]
                            },
                            {
                                "id": "horse-rider-assignment",
                                "name": "Horse-rider assignment",
                                "description": "Tracks the mount used by each player and the conditions for changing mounts.",
                                "findings": [
                                    {
                                        "id": "mount-use-and-change",
                                        "name": "Mount use and change",
                                        "description": "Mount identity and participation history provide the context needed to interpret changes, workload and readiness.",
                                        "questions": [
                                            {
                                                "text": "Which horse is assigned to each player during each recorded period of participation?",
                                                "kind": "measurement",
                                                "id": "mount-use-and-change-q01"
                                            },
                                            {
                                                "text": "When may a player change mounts, and what inspection or authorisation is required before the replacement enters?",
                                                "kind": "action",
                                                "id": "mount-use-and-change-q02"
                                            }
                                        ]
                                    }
                                ]
                            }
                        ]
                    },
                    {
                        "id": "play-scoring-and-officiating",
                        "name": "Play, scoring and officiating",
                        "description": "Makes match progression and disputed play interpretable under the selected polo rules.",
                        "rationale": "Goals alone do not explain match state; clock operation, restarts and movement rights affect what can happen next.",
                        "layers": [
                            {
                                "id": "goals-periods-and-restarts",
                                "name": "Goals, periods and restarts",
                                "description": "Connects ball outcomes to the score, clock and continuation of play.",
                                "findings": [
                                    {
                                        "id": "recognised-match-transitions",
                                        "name": "Recognised match transitions",
                                        "description": "A goal, boundary event, whistle or period ending needs its official interpretation before the next match state can be determined.",
                                        "questions": [
                                            {
                                                "text": "What conditions establish a valid goal, and how are awarded goals or handicap adjustments distinguished from goals scored in play?",
                                                "kind": "definition",
                                                "id": "recognised-match-transitions-q01"
                                            },
                                            {
                                                "text": "After a goal, boundary event or stoppage, what restart and clock procedure applies?",
                                                "kind": "action",
                                                "id": "recognised-match-transitions-q02"
                                            }
                                        ]
                                    }
                                ]
                            },
                            {
                                "id": "movement-rights-and-contact",
                                "name": "Movement rights and contact",
                                "description": "Structures review of ball-line, right-of-way and contact incidents.",
                                "findings": [
                                    {
                                        "id": "contested-play-interpretation",
                                        "name": "Contested play interpretation",
                                        "description": "Incident assessment must relate the ball's path, horse-rider trajectories and attempted actions to the applicable rules and official decision.",
                                        "questions": [
                                            {
                                                "text": "What evidence establishes the ball's line and the players' directions, positions and relative movement at the relevant moment?",
                                                "kind": "measurement",
                                                "id": "contested-play-interpretation-q01"
                                            },
                                            {
                                                "text": "How does the governing ruleset determine right of way and permitted riding-off or mallet-hooking in this situation?",
                                                "kind": "boundary",
                                                "id": "contested-play-interpretation-q02"
                                            },
                                            {
                                                "text": "Which official determines the infringement, penalty and restart, and what decision was recorded?",
                                                "kind": "action",
                                                "id": "contested-play-interpretation-q03"
                                            }
                                        ]
                                    }
                                ]
                            }
                        ]
                    },
                    {
                        "id": "playing-conditions-and-welfare",
                        "name": "Playing conditions and welfare",
                        "description": "Determines whether the ground, equipment and participants support continued polo play.",
                        "rationale": "Mounted speed, mallet use and repeated equine exertion make suitability and welfare central to participation decisions.",
                        "layers": [
                            {
                                "id": "ground-and-equipment-readiness",
                                "name": "Ground and equipment readiness",
                                "description": "Assesses the playing surface, boundaries, goals, tack and protective equipment for the selected format.",
                                "findings": [
                                    {
                                        "id": "polo-specific-readiness-check",
                                        "name": "Polo-specific readiness check",
                                        "description": "Readiness requires applicable criteria and inspection evidence for the surface and equipment used by moving horse-rider combinations.",
                                        "questions": [
                                            {
                                                "text": "What surface, boundary, goal and clearance conditions must this field or arena satisfy?",
                                                "kind": "definition",
                                                "id": "polo-specific-readiness-check-q01"
                                            },
                                            {
                                                "text": "Which tack, mallet and protective-equipment checks are required, and who recorded their results?",
                                                "kind": "provenance",
                                                "id": "polo-specific-readiness-check-q02"
                                            }
                                        ]
                                    }
                                ]
                            },
                            {
                                "id": "equine-and-rider-participation",
                                "name": "Equine and rider participation",
                                "description": "Connects observed condition and workload to decisions about continuing or stopping participation.",
                                "findings": [
                                    {
                                        "id": "withdrawal-and-return-to-play",
                                        "name": "Withdrawal and return to play",
                                        "description": "Readiness judgments must distinguish recorded observations from qualified clearance and identify who can withdraw or readmit a horse or rider.",
                                        "questions": [
                                            {
                                                "text": "What participation, recovery and condition observations are available for the horse and rider, and when were they recorded?",
                                                "kind": "measurement",
                                                "id": "withdrawal-and-return-to-play-q01"
                                            },
                                            {
                                                "text": "Which observed conditions or official findings require withdrawal, and who may authorise a return to play?",
                                                "kind": "action",
                                                "id": "withdrawal-and-return-to-play-q02"
                                            }
                                        ]
                                    }
                                ]
                            }
                        ]
                    },
                    {
                        "id": "evidence-and-external-alignment",
                        "name": "Evidence and external alignment",
                        "description": "What the world already says about this thing, gathered so the model can be checked against it.",
                        "rationale": "A model that cannot be lined up against existing standards, identifiers and practice cannot be adopted by anyone who already uses them.",
                        "layers": [
                            {
                                "id": "reported-evidence",
                                "name": "Reported evidence",
                                "description": "Findings from the breadth pass, kept separate from the structural claims.",
                                "findings": [
                                    {
                                        "id": "evidence-confidence-notes",
                                        "name": "Check these first",
                                        "description": "Recalled without web access and unsourced; every item is a lead to verify.",
                                        "evidence": [
                                            "The activity domain supports interpreting the unspecified sense as equestrian polo.",
                                            "Rule details, field dimensions and handicap ranges should be checked against the relevant association and format.",
                                            "This is recalled knowledge; no sources were consulted."
                                        ],
                                        "questions": [
                                            {
                                                "id": "evidence-confidence-notes-q01",
                                                "text": "Which of these check these first hold for the sense of polo this model covers, and on what evidence?",
                                                "kind": "provenance"
                                            }
                                        ]
                                    },
                                    {
                                        "id": "evidence-kinds",
                                        "name": "Kinds and varieties",
                                        "description": "Recalled without web access and unsourced; every item is a lead to verify.",
                                        "evidence": [
                                            "Outdoor grass polo",
                                            "Arena polo",
                                            "Snow polo",
                                            "Beach polo"
                                        ],
                                        "questions": [
                                            {
                                                "id": "evidence-kinds-q01",
                                                "text": "Which of these kinds and varieties hold for the sense of polo this model covers, and on what evidence?",
                                                "kind": "provenance"
                                            }
                                        ]
                                    },
                                    {
                                        "id": "evidence-standards-and-regulation",
                                        "name": "Standards and regulation",
                                        "description": "Recalled without web access and unsourced; every item is a lead to verify.",
                                        "evidence": [
                                            "United States Polo Association rules governing outdoor and arena polo.",
                                            "Hurlingham Polo Association rules governing polo within its jurisdiction.",
                                            "Federation of International Polo rules and competition requirements for its international events."
                                        ],
                                        "questions": [
                                            {
                                                "id": "evidence-standards-and-regulation-q01",
                                                "text": "Which of these standards and regulation hold for the sense of polo this model covers, and on what evidence?",
                                                "kind": "provenance"
                                            }
                                        ]
                                    },
                                    {
                                        "id": "evidence-real-world-use",
                                        "name": "Real-world use",
                                        "description": "Recalled without web access and unsourced; every item is a lead to verify.",
                                        "evidence": [
                                            "Club and recreational equestrian competition.",
                                            "Professional and international tournament competition.",
                                            "Training riders and horses in coordinated team play."
                                        ],
                                        "questions": [
                                            {
                                                "id": "evidence-real-world-use-q01",
                                                "text": "Which of these real-world use hold for the sense of polo this model covers, and on what evidence?",
                                                "kind": "provenance"
                                            }
                                        ]
                                    },
                                    {
                                        "id": "evidence-measurements",
                                        "name": "Typical measurements",
                                        "description": "Recalled without web access and unsourced; every item is a lead to verify.",
                                        "evidence": [
                                            {
                                                "quantity": "Players per team on the field",
                                                "typical_range": "4 in conventional outdoor polo; 3 in conventional arena polo",
                                                "unit": "players"
                                            },
                                            {
                                                "quantity": "Nominal chukka duration",
                                                "typical_range": "Approximately 7, with stopping and ending procedures depending on the rules",
                                                "unit": "minutes"
                                            },
                                            {
                                                "quantity": "Full-size outdoor field dimensions",
                                                "typical_range": "Approximately 300 long by 160 wide; boarded fields may be narrower",
                                                "unit": "yards"
                                            },
                                            {
                                                "quantity": "Player handicap in many outdoor systems",
                                                "typical_range": "-2 to 10",
                                                "unit": "goals"
                                            }
                                        ],
                                        "questions": [
                                            {
                                                "id": "evidence-measurements-q01",
                                                "text": "Which of these typical measurements hold for the sense of polo this model covers, and on what evidence?",
                                                "kind": "provenance"
                                            }
                                        ]
                                    },
                                    {
                                        "id": "evidence-failure-modes-and-hazards",
                                        "name": "Failure modes and hazards",
                                        "description": "Recalled without web access and unsourced; every item is a lead to verify.",
                                        "evidence": [
                                            "Falls and collisions can injure riders and horses.",
                                            "Balls and mallets can strike riders, horses or spectators.",
                                            "Unsafe crossing of the ball's line or another player's right of way can cause collisions.",
                                            "Excessive exertion, heat stress and inadequate recovery can compromise horse welfare.",
                                            "Poor footing or unsuitable equipment can contribute to falls and musculoskeletal injury."
                                        ],
                                        "questions": [
                                            {
                                                "id": "evidence-failure-modes-and-hazards-q01",
                                                "text": "Which of these failure modes and hazards hold for the sense of polo this model covers, and on what evidence?",
                                                "kind": "provenance"
                                            }
                                        ]
                                    },
                                    {
                                        "id": "evidence-regional-variation",
                                        "name": "Regional variation",
                                        "description": "Recalled without web access and unsourced; every item is a lead to verify.",
                                        "evidence": [
                                            "National associations differ in handicapping, eligibility and detailed playing rules.",
                                            "Argentina is a major centre of professional polo and polo-horse breeding.",
                                            "Traditional polo in parts of Central and South Asia includes local formats that differ from internationally codified club polo."
                                        ],
                                        "questions": [
                                            {
                                                "id": "evidence-regional-variation-q01",
                                                "text": "Which of these regional variation hold for the sense of polo this model covers, and on what evidence?",
                                                "kind": "provenance"
                                            }
                                        ]
                                    },
                                    {
                                        "id": "evidence-neighbours",
                                        "name": "Neighbouring kinds and how to tell them apart",
                                        "description": "Recalled without web access and unsourced; every item is a lead to verify.",
                                        "evidence": [
                                            {
                                                "name": "Water polo",
                                                "difference": "Players swim and handle the ball directly; horses and mallets are absent."
                                            },
                                            {
                                                "name": "Polocrosse",
                                                "difference": "Mounted players use net-headed sticks to catch, carry and throw the ball."
                                            },
                                            {
                                                "name": "Field hockey",
                                                "difference": "Players compete on foot using shorter sticks rather than playing mounted."
                                            },
                                            {
                                                "name": "Polo shirt",
                                                "difference": "A garment associated historically with sporting dress, rather than the activity described here."
                                            }
                                        ],
                                        "questions": [
                                            {
                                                "id": "evidence-neighbours-q01",
                                                "text": "Which of these neighbouring kinds and how to tell them apart hold for the sense of polo this model covers, and on what evidence?",
                                                "kind": "provenance"
                                            }
                                        ]
                                    }
                                ]
                            }
                        ]
                    }
                ]
            },
            "openQuestions": [
                "Does the registry source confirm that vr.tr.polo denotes the mounted sport, and does an existing world model already cover that concept?",
                "Which mounted variants should this entry own, particularly where field and arena rules differ?",
                "Which authoritative rulebooks should establish the initial model, and which differences require explicit format-specific treatment?",
                "How should handicap ratings be interpreted across authorities, formats and dates without implying unsupported equivalence?",
                "Which documented welfare and participation criteria can support agent checks, and which decisions must remain with qualified assessors or officials?"
            ],
            "statistics": {
                "bundles": 5,
                "layers": 9,
                "findings": 16,
                "questions": 25
            }
        },
        "draft": {
            "generator": "vr.draft.v3",
            "status": "draft-generated",
            "researched": false,
            "archetype": "abstract concept",
            "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 polo, record what state it is in, and decide what may be done with it.",
            "whatItIs": "Enable an agent to recognise polo as a mounted team sport, assess its playing conditions and match state, and identify actions permitted by the applicable rules and horse-welfare constraints.",
            "characteristics": {
                "substance": "activity",
                "origin": "conceptual",
                "agency": "inert"
            },
            "whatYouCanDoWithIt": [
                "observed and measured"
            ],
            "distinguishingFeatures": [
                "Names folded into this entry, which a task may need to split apart again: elephant polo, beach polo, cowboy polo, Yak polo, polo in Nigeria.",
                "5 finer distinctions are held as aliases rather than separate entries, because telling them apart needs a task that asks for it.",
                "Described in 81 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 polo, and on what evidence are they told apart?"
            ],
            "whatItIsMadeOf": "something that happens over time",
            "physicalCharacter": [
                "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": [
                "Nothing to see. What is recognised is an instance of it, and which instances count is exactly what is argued about."
            ],
            "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": [
                        "elephant polo",
                        "beach polo",
                        "cowboy polo",
                        "Yak polo",
                        "polo in Nigeria"
                    ]
                }
            ],
            "standing": "Described in 81 Wikipedia languages, which measures how widely it is written about rather than how important or how common it is. 5 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 polo from another, and a polo 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 polo, 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 polo, 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 polo 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 polo, 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 polo, 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 polo 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 polo 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 polo, 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 polo, 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 polo 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 polo from the things most often confused with it.",
                                        "questions": [
                                            {
                                                "id": "distinguishing-features-q01",
                                                "text": "What identifies and describes what distinguishes a polo, 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 polo, 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 polo 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 polo 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 polo between them.",
                                        "questions": [
                                            {
                                                "id": "stages-and-transitions-q01",
                                                "text": "What identifies and describes the lifecycle of a polo, 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 polo, 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 polo 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 polo, how often and by whom.",
                                "findings": [
                                    {
                                        "id": "observation-record",
                                        "name": "Observation record",
                                        "description": "How an observation of a polo 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 polo, 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 polo, 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 polo is known, and what must it refuse?",
                                                "kind": "action",
                                                "answer_data": [
                                                    "permitted actions",
                                                    "preconditions",
                                                    "refusals",
                                                    "escalation"
                                                ]
                                            }
                                        ]
                                    }
                                ]
                            }
                        ]
                    },
                    {
                        "id": "process-and-outcome",
                        "name": "Process, inputs and outcome",
                        "description": "How a polo proceeds, what it needs and what it leaves behind.",
                        "rationale": "An activity is known by its steps and its results, and both have to be recordable while it is still running.",
                        "layers": [
                            {
                                "id": "steps-and-sequence",
                                "name": "Steps and sequence",
                                "description": "The steps of a polo, their order and what may run in parallel.",
                                "findings": [
                                    {
                                        "id": "steps-and-preconditions",
                                        "name": "Steps, preconditions and completion",
                                        "description": "What has to be true before each step of a polo and what marks it done.",
                                        "questions": [
                                            {
                                                "id": "steps-and-preconditions-q01",
                                                "text": "What identifies and describes a step of a polo, and in what units or vocabulary?",
                                                "kind": "definition",
                                                "answer_data": [
                                                    "identifiers",
                                                    "types and classes",
                                                    "values with units",
                                                    "explicit unknowns"
                                                ]
                                            },
                                            {
                                                "id": "steps-and-preconditions-q02",
                                                "text": "Who or what asserted this about a step of a polo, by which method, and when was it true?",
                                                "kind": "provenance",
                                                "answer_data": [
                                                    "authority",
                                                    "method",
                                                    "evidence",
                                                    "event time",
                                                    "knowledge time"
                                                ]
                                            },
                                            {
                                                "id": "steps-and-preconditions-q03",
                                                "text": "What may an agent decide or do once a step of a polo is known, and what must it refuse?",
                                                "kind": "action",
                                                "answer_data": [
                                                    "permitted actions",
                                                    "preconditions",
                                                    "refusals",
                                                    "escalation"
                                                ]
                                            }
                                        ]
                                    }
                                ]
                            },
                            {
                                "id": "inputs-and-results",
                                "name": "Inputs, resources and results",
                                "description": "What a polo consumes and what it produces.",
                                "findings": [
                                    {
                                        "id": "inputs-and-outputs",
                                        "name": "Inputs, outputs and side effects",
                                        "description": "The resources a polo takes and the results it leaves, wanted or not.",
                                        "questions": [
                                            {
                                                "id": "inputs-and-outputs-q01",
                                                "text": "What identifies and describes the inputs and results of a polo, and in what units or vocabulary?",
                                                "kind": "definition",
                                                "answer_data": [
                                                    "identifiers",
                                                    "types and classes",
                                                    "values with units",
                                                    "explicit unknowns"
                                                ]
                                            },
                                            {
                                                "id": "inputs-and-outputs-q02",
                                                "text": "Who or what asserted this about the inputs and results of a polo, by which method, and when was it true?",
                                                "kind": "provenance",
                                                "answer_data": [
                                                    "authority",
                                                    "method",
                                                    "evidence",
                                                    "event time",
                                                    "knowledge time"
                                                ]
                                            },
                                            {
                                                "id": "inputs-and-outputs-q03",
                                                "text": "What may an agent decide or do once the inputs and results of a polo is known, and what must it refuse?",
                                                "kind": "action",
                                                "answer_data": [
                                                    "permitted actions",
                                                    "preconditions",
                                                    "refusals",
                                                    "escalation"
                                                ]
                                            }
                                        ]
                                    }
                                ]
                            }
                        ]
                    },
                    {
                        "id": "definitions-in-contest",
                        "name": "Definitions and who holds them",
                        "description": "What polo is taken to mean, and by whom.",
                        "rationale": "When a field disagrees about a concept, the disagreement is the content. A model that picks one definition silently destroys the information.",
                        "layers": [
                            {
                                "id": "competing-definitions",
                                "name": "Competing definitions",
                                "description": "The main readings and the traditions behind them.",
                                "findings": [
                                    {
                                        "id": "definition-map",
                                        "name": "Definitions and their holders",
                                        "description": "Each definition with the school or body that holds it.",
                                        "questions": [
                                            {
                                                "id": "definition-map-q01",
                                                "text": "Which definitions of polo are in use, and which tradition or body holds each?",
                                                "kind": "definition"
                                            },
                                            {
                                                "id": "definition-map-q02",
                                                "text": "What turns on the difference between them in practice?",
                                                "kind": "boundary"
                                            }
                                        ]
                                    }
                                ]
                            },
                            {
                                "id": "operationalisation",
                                "name": "Operationalisation",
                                "description": "How it is measured or applied when it has to be.",
                                "findings": [
                                    {
                                        "id": "operational-record",
                                        "name": "Measures and proxies",
                                        "description": "Instruments and indicators used to stand in for it.",
                                        "questions": [
                                            {
                                                "id": "operational-record-q01",
                                                "text": "How is polo operationalised or measured in practice, and by what instrument?",
                                                "kind": "measurement"
                                            },
                                            {
                                                "id": "operational-record-q02",
                                                "text": "What does that operationalisation leave out, and when does that matter?",
                                                "kind": "boundary"
                                            }
                                        ]
                                    }
                                ]
                            }
                        ]
                    },
                    {
                        "id": "instances-and-use",
                        "name": "Instances, use and consequence",
                        "description": "What counts as an instance of polo and what follows from calling something that.",
                        "rationale": "Applying a concept is an act with consequences, so a model must say what the label licenses and what it does not.",
                        "layers": [
                            {
                                "id": "instances",
                                "name": "What counts as an instance",
                                "description": "Clear cases, borderline cases and non-cases.",
                                "findings": [
                                    {
                                        "id": "instance-tests",
                                        "name": "Tests for an instance",
                                        "description": "What would settle whether something falls under it.",
                                        "questions": [
                                            {
                                                "id": "instance-tests-q01",
                                                "text": "What would settle whether something is an instance of polo?",
                                                "kind": "boundary"
                                            },
                                            {
                                                "id": "instance-tests-q02",
                                                "text": "Which borderline cases are argued about, and on what grounds?",
                                                "kind": "definition"
                                            }
                                        ]
                                    }
                                ]
                            },
                            {
                                "id": "consequence",
                                "name": "Consequence of application",
                                "description": "Rights, duties or decisions that follow from the label.",
                                "findings": [
                                    {
                                        "id": "consequence-record",
                                        "name": "What the label licenses",
                                        "description": "What an agent may do once something is classified this way.",
                                        "questions": [
                                            {
                                                "id": "consequence-record-q01",
                                                "text": "What follows practically once something is treated as polo?",
                                                "kind": "action"
                                            },
                                            {
                                                "id": "consequence-record-q02",
                                                "text": "What must an agent not infer from the label alone?",
                                                "kind": "action"
                                            }
                                        ]
                                    }
                                ]
                            }
                        ]
                    },
                    {
                        "id": "provenance-and-evidence",
                        "name": "Provenance, evidence and time",
                        "description": "Where every claim about a polo 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 polo and how confident it is.",
                                        "questions": [
                                            {
                                                "id": "claim-provenance-q01",
                                                "text": "What identifies and describes a claim about a polo, 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 polo, 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 polo 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 polo is retired without being erased.",
                                        "questions": [
                                            {
                                                "id": "validity-and-supersession-q01",
                                                "text": "What identifies and describes the validity of a claim about a polo, 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 polo, 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 polo is known, and what must it refuse?",
                                                "kind": "action",
                                                "answer_data": [
                                                    "permitted actions",
                                                    "preconditions",
                                                    "refusals",
                                                    "escalation"
                                                ]
                                            }
                                        ]
                                    }
                                ]
                            }
                        ]
                    }
                ]
            },
            "statistics": {
                "bundles": 6,
                "layers": 12,
                "findings": 14,
                "questions": 38
            }
        }
    }
}