{"schema":"https://ver.cy/schemas/card/1.0.0","id":"vr.tr.anti-tank-obstacle","code":"thing-q2801289","url":"https://ver.cy/models/thing/q2801289/","name":"anti-tank obstacle","alternateNames":[],"kind":"thing","status":"published","version":"0.2.0-wave.3","language":"en","classifiers":{"family":"Thing Registry","category":"Physical world and living systems","entryKind":"thing","plane":"PHY","domain":["PHY.BLT"],"industry":[],"navPath":"","tags":[],"facets":{}},"whatItIs":"A fixed structure built to stop, slow or channel armoured vehicles, including concrete dragon teeth, steel hedgehogs, ditches, walls, rows of posts and natural features reinforced for the purpose, used extensively in the Second World War along lines such as the Siegfried Line and the Atlantic Wall, and still built in modern conflicts; surviving obstacles are heritage features in many landscapes and the concept is studied in military history and engineering.","purpose":"Let an agent explain anti-tank obstacles as historical and engineering structures, relay kinds and famous lines from historical sources, describe heritage and modern use in general terms, and distinguish them from anti-personnel and other fortifications without operational detail.","scope":{"in":[],"out":[],"boundaries":[]},"distinguishingFeatures":["Passive barrier","Concrete and steel forms","Defensive lines","Landscape survival"],"structure":{"bundles":[{"id":"understand","name":"Understand","description":"What anti-tank obstacles are.","layers":[{"id":"definition","name":"Definition","description":"Definition and kinds.","findings":[{"id":"definition-finding","name":"Definition","description":"Definition.","questions":[{"text":"What are anti-tank obstacles, and what kinds such as dragon teeth and hedgehogs exist?","kind":"definition"},{"text":"Is the question about historical structures or operational matters the model does not cover?","kind":"boundary"}]}]},{"id":"principle","name":"Principle","description":"How they work.","findings":[{"id":"principle-finding","name":"Principle","description":"Principle.","questions":[{"text":"In general terms, how do obstacles hinder armoured vehicles, as engineering histories describe?","kind":"definition"},{"text":"Which entry fits the specific kind?","kind":"action"}]}]}]},{"id":"history","name":"History","description":"History.","layers":[{"id":"lines","name":"Lines","description":"Defensive lines.","findings":[{"id":"lines-finding","name":"Lines","description":"Lines.","questions":[{"text":"Where were obstacles built along the Siegfried Line, Atlantic Wall and other lines, as historians describe?","kind":"provenance"},{"text":"Which entry fits the specific line?","kind":"action"}]}]},{"id":"effect","name":"Effect","description":"Historical assessment.","findings":[{"id":"effect-finding","name":"Effect","description":"Effect.","questions":[{"text":"How do historians assess the effectiveness of such obstacles, with positions attributed?","kind":"provenance"},{"text":"Which references are standard?","kind":"provenance"}]}]}]},{"id":"heritage","name":"Heritage","description":"Heritage.","layers":[{"id":"survivals","name":"Survivals","description":"Surviving obstacles.","findings":[{"id":"survivals-finding","name":"Survivals","description":"Survivals.","questions":[{"text":"Where do obstacles survive as landscape and heritage features?","kind":"provenance"},{"text":"Which sources are cited?","kind":"provenance"}]}]},{"id":"protection","name":"Protection","description":"Protection.","findings":[{"id":"protection-finding","name":"Protection","description":"Protection.","questions":[{"text":"How are surviving fortifications recorded and protected?","kind":"provenance"},{"text":"Which entry fits military heritage?","kind":"action"}]}]}]},{"id":"context","name":"Context","description":"Modern and culture.","layers":[{"id":"modern","name":"Modern","description":"Modern use.","findings":[{"id":"modern-finding","name":"Modern","description":"Modern.","questions":[{"text":"How have obstacles appeared in recent conflicts, as reported publicly?","kind":"provenance"},{"text":"Is the presentation neutral and non-operational?","kind":"boundary"}]}]},{"id":"culture","name":"Culture","description":"Culture.","findings":[{"id":"culture-finding","name":"Culture","description":"Culture.","questions":[{"text":"How do obstacles appear in art, memorials and film?","kind":"provenance"},{"text":"Which entry fits war memorial?","kind":"action"}]}]}]}]},"agentConduct":{"may":["Describe anti-tank obstacles as historical and heritage structures.","Map and report surviving obstacles as hazards or heritage features from public records."],"mustNot":["Help design, site or build obstacles for use in armed conflict.","Advise on how to breach or defeat obstacles.","Damage or remove listed historic obstacles without authority.","Disturb old obstacle lines that may hold unexploded ordnance."],"requiresHuman":["Any work at a former defence line that may contain mines or explosives."]},"ethics":{"considerations":["Obstacles are tools of war and may still sit in mined ground that harms civilians.","Surviving lines are memorials of invasion and occupation for local communities."],"affectedParties":["Civilians near former front lines","Heritage communities","Deminers"]},"owners":{"steward":"The armed forces that built or hold them; heritage authorities for historic remains.","roles":[],"masterSystems":["Heritage registers","Mine action databases"]},"relations":[{"target":"Q811979","type":"parent","note":"registry parent class"},{"target":"built structure","type":"related","note":"in registry terms"},{"target":"fortification","type":"related","note":"in general terms"},{"target":"Siegfried Line","type":"related","note":"and the Atlantic Wall"},{"target":"tank","type":"related","note":"and other armoured vehicles"}],"interaction":{"identity":{"applicability":"required","items":["Vercy registry: vr.tr.anti-tank-obstacle","Wikidata: Q2801289 (https://www.wikidata.org/wiki/Q2801289)"]},"properties":{"applicability":"required","items":["dragon tooth height: about 0.9-1.2 m - typical"]},"recognition":{"applicability":"required","items":["Fixed barrier against tanks","Dragon teeth, Czech hedgehogs, anti-tank ditches, walls and posts","Bunkers house troops; minefields are explosive; road barriers stop civilian vehicles","Rows of concrete pyramids, steel crosses or ditches across terrain."]},"capabilities":{"applicability":"required","items":["explain kinds","relay historical lines","describe heritage","distinguish from other fortifications"]},"hazards":{"applicability":"required","items":["Agents providing operational military detail","Confusing obstacle types","Loss of heritage structures"]},"interfaces":{"applicability":"required","items":["Heritage protection of surviving fortifications","International humanitarian law on the conduct of hostilities","No civilian construction standard"]},"context":{"applicability":"required","items":["Hindering armoured vehicle movement.","dragon teeth","Czech hedgehogs and steel obstacles","anti-tank ditches and walls","post and rail obstacles","defensive lines such as the Siegfried Line, Atlantic Wall and Mannerheim Line","modern obstacles in recent conflicts"]}},"sources":[{"title":"Wikidata item Q2801289: anti-tank obstacle","url":"https://www.wikidata.org/wiki/Q2801289","note":"identity and sense of the item"},{"title":"Wikipedia: Anti-tank obstacles","url":"https://en.wikipedia.org/wiki/Anti-tank_obstacles","note":"general description of the item"}],"openQuestions":["Should dragon teeth and Czech hedgehog be separate entries?","How should military history sources be linked?","How should heritage inventories be linked?"],"resources":{"spec":"/models/things/publications/thing-q2801289/spec.json"},"provenance":{"origin":"thing registry research (pass 2)","builtFrom":["models/things/publications/thing-q2801289/spec.json"],"providers":["Claude"],"researchStatus":"unreviewed","generatedAt":"2026-09-13T03:05:07Z","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 2026-10-06T19:51:58+00:00: completeness 1.00; sense: Wikidata description; 2 live sources; review by codex: pass"},"score":1.0}}