{"schema":"https://ver.cy/schemas/card/1.0.0","id":"vr.tr.caterpillar-q1959404","code":"thing-q1959404","url":"https://ver.cy/models/thing/q1959404/","name":"caterpillar","alternateNames":[],"kind":"thing","status":"published","version":"0.2.0-wave.1","language":"en","classifiers":{"family":"Thing Registry","category":"Physical world and living systems","entryKind":"thing","plane":"PHY","domain":["PHY.OBJ"],"industry":[],"navPath":"","tags":[],"facets":{}},"whatItIs":"A classic amusement ride in which a train of linked cars travels around an undulating circular track, often with a canopy that rises over riders during the ride to resemble a caterpillar, popular at fairs and parks from the 1920s; few original examples survive and some are preserved as heritage rides.","purpose":"Let an agent describe the caterpillar amusement ride, its history and surviving examples, explain ride safety at a general level, and separate the insect larva and vehicle track senses.","scope":{"in":[],"out":[],"boundaries":[]},"distinguishingFeatures":["Circular undulating track","Rising canopy","Vintage fairground ride","Few surviving examples"],"structure":{"bundles":[{"id":"describe","name":"Describe","description":"The ride.","layers":[{"id":"mechanism","name":"Mechanism","description":"How it works.","findings":[{"id":"mechanism-finding","name":"Mechanism","description":"Mechanism.","questions":[{"text":"How does the caterpillar ride move, and how does the canopy operate?","kind":"definition"},{"text":"How fast does it go?","kind":"measurement"}]}]},{"id":"experience","name":"Experience","description":"Riding it.","findings":[{"id":"experience-finding","name":"Experience","description":"Experience.","questions":[{"text":"What is the ride experience, including the enclosed canopy phase?","kind":"definition"},{"text":"Which height or health restrictions apply?","kind":"provenance"}]}]}]},{"id":"history","name":"History","description":"Heritage.","layers":[{"id":"origins","name":"Origins","description":"Invention.","findings":[{"id":"origins-finding","name":"Origins","description":"Origins.","questions":[{"text":"When and by whom was the caterpillar ride developed, according to fairground historians?","kind":"provenance"},{"text":"How popular was it?","kind":"provenance"}]}]},{"id":"surviving","name":"Surviving","description":"Where to ride one.","findings":[{"id":"surviving-finding","name":"Surviving","description":"Surviving examples.","questions":[{"text":"Which caterpillar rides still operate or are preserved?","kind":"provenance"},{"text":"Are any listed as heritage?","kind":"provenance"}]}]}]},{"id":"safety","name":"Safety","description":"Ride safety.","layers":[{"id":"regulation","name":"Regulation","description":"Inspection.","findings":[{"id":"regulation-finding","name":"Regulation","description":"Inspection.","questions":[{"text":"Which safety standards and inspection schemes apply to amusement rides here?","kind":"provenance"},{"text":"How are vintage rides certified?","kind":"provenance"}]}]},{"id":"incident","name":"Incident","description":"Emergencies.","findings":[{"id":"incident-finding","name":"Incident","description":"Emergencies.","questions":[{"text":"Has an incident occurred on a ride?","kind":"boundary"},{"text":"Who should be alerted?","kind":"action"}]}]}]},{"id":"senses","name":"Senses","description":"Disambiguation.","layers":[{"id":"insect","name":"Insect","description":"Larva.","findings":[{"id":"insect-finding","name":"Insect","description":"Insect sense.","questions":[{"text":"Is the larva of a butterfly or moth meant?","kind":"boundary"},{"text":"Which entry fits?","kind":"action"}]}]},{"id":"vehicle","name":"Vehicle","description":"Tracked vehicles and brand.","findings":[{"id":"vehicle-finding","name":"Vehicle","description":"Vehicle sense.","questions":[{"text":"Is a caterpillar track or the machinery brand meant?","kind":"boundary"},{"text":"Which entry fits?","kind":"action"}]}]}]}]},"agentConduct":{"may":["Report ride details, height limits and operating status from the operator.","Monitor ride systems and log faults for the operator."],"mustNot":["Operate the ride outside its inspection certificate or with a known fault.","Admit riders below the height or above the weight limits, or without restraints fastened.","Lower or raise the canopy while riders are boarding or alighting.","Override interlocks or emergency stops."],"requiresHuman":["Restarting the ride after a fault, stoppage or injury.","Carrying a rider whose fitness to ride is in doubt."]},"ethics":{"considerations":["Fairground rides injure children when limits and restraints are ignored.","Historic rides are heritage machines whose preservation needs care."],"affectedParties":["Riders, especially children","Ride operators","Preservation groups"]},"owners":{"steward":"The ride owner or showman who operates it, under the local safety inspection regime.","roles":[],"masterSystems":[]},"relations":[{"target":"Q1144661","type":"parent","note":"registry parent class"},{"target":"amusement ride","type":"related","note":"category"},{"target":"fairground","type":"related","note":"venue"},{"target":"stadium","type":"related","note":"other leisure venue"},{"target":"caterpillar","type":"related","note":"insect larva sense"}],"interaction":{"identity":{"applicability":"required","items":["Vercy registry: vr.tr.caterpillar-q1959404","Wikidata: Q1959404 (https://www.wikidata.org/wiki/Q1959404)"]},"properties":{"applicability":"required","items":["Track diameter:  metres - Measure the diameter of the circular track centerline using surveyed dimensions or engineering drawings.","Track elevation variation:  metres - Measure the vertical difference between the highest and lowest points of the track centerline.","Operating rotational speed:  revolutions per minute - Determine the train's circuit frequency from verified operating records or measured circuit times."]},"recognition":{"applicability":"required","items":["Circular hilly track","Canopy that covers the train","Roller coasters have longer tracks with drops","A circular undulating track with a train of cars and a canopy that closes over riders."]},"capabilities":{"applicability":"required","items":["describe the ride and its mechanism","find surviving caterpillar rides","explain ride safety regulation in general terms","separate other senses of caterpillar"]},"hazards":{"applicability":"required","items":["Mechanical failures on vintage rides","Confusing senses","Loss of heritage rides"]},"interfaces":{"applicability":"required","items":["Amusement ride safety standards such as EN 13814","National ride inspection schemes"]},"context":{"applicability":"required","items":["Amusement and fairground heritage.","original 1920s caterpillar rides","later manufacturer variants","preserved heritage rides","modern reproductions"]}},"sources":[{"title":"Wikidata item Q1959404: caterpillar","url":"https://www.wikidata.org/wiki/Q1959404","note":"identity and sense of the item"},{"title":"Wikipedia: Caterpillar (ride)","url":"https://en.wikipedia.org/wiki/Caterpillar_%28ride%29","note":"general description of the item"}],"openQuestions":["Should surviving rides be separate entries?","How should fairground heritage sources be linked?","How should safety schemes be localised?"],"resources":{"spec":"/models/things/publications/thing-q1959404/spec.json"},"provenance":{"origin":"thing registry research (pass 2)","builtFrom":["models/things/publications/thing-q1959404/spec.json"],"providers":["Claude"],"researchStatus":"unreviewed","generatedAt":"2026-09-11T15:39:38Z","builder":"tools/build_cards.py@1.0.0"},"completeness":{"sections":{"classifiers":"filled","whatItIs":"filled","purpose":"filled","distinguishingFeatures":"filled","structure":"filled","agentConduct":"filled","ethics":"filled","owners":"filled","relations":"filled","interaction.identity":"filled","interaction.properties":"filled","interaction.recognition":"filled","interaction.capabilities":"filled","interaction.hazards":"filled","interaction.interfaces":"filled","interaction.context":"filled","sources":"filled"},"notes":{"_gate":"Published through the thing publication gate 1.0 on 2026-10-07T10:10:28+00:00: completeness 1.00; sense: Wikidata description; 2 live sources; review by codex: pass"},"score":1.0}}