{"schema":"https://ver.cy/schemas/card/1.0.0","id":"vr.tr.christmas-tree","code":"thing-q47128","url":"https://ver.cy/models/thing/q47128/","name":"Christmas tree","alternateNames":["artificial Christmas tree","The Christmas Tree of Turku Cathedral","Jöölboom","Feather Christmas tree","singing Christmas tree"],"kind":"thing","status":"published","version":"0.1.0-research.1","language":"en","classifiers":{"family":"Thing Registry","category":"Activities and processes","entryKind":"thing","plane":"ACT","domain":["ACT.ACT"],"industry":[],"navPath":"","tags":[],"facets":{}},"whatItIs":"A Christmas tree is a cut or living tree, typically an evergreen of the Pinaceae, or an artificial or alternative tree-shaped assembly, designated for use as a focal object of Christmas observance in a household, church, or public place, whether currently erected and decorated, undecorated, or stored for seasonal reuse.","purpose":"Enable an AI agent to recognise a Christmas tree, assess its seasonal display and material condition, and determine appropriate installation, decoration, care and removal actions.","scope":{"in":["Designation and evidence of use as a Christmas tree","Cut, rooted, artificial or alternative tree construction","Tree dimensions, support and placement within its display setting","Arrangement and attachment of Christmas decorations and lighting","Material condition, seasonal care and transition out of display"],"out":["Forestry, nursery production and cultivation before selection as a Christmas tree","General Christmas celebrations, religious observances and event programmes","Building-wide electrical systems and fire safety management","Manufacture and independent lifecycle of ornaments, lighting products and stands","Waste collection services, recycling infrastructure and landscape management"],"boundaries":[]},"distinguishingFeatures":["A recorded designation or use identifies the object as a Christmas tree; conifer shape alone does not establish that role.","A whole tree or a coherent tree-shaped assembly forms the display, distinguishing it from a wreath, garland or collection of loose branches.","A natural tree has been selected or designated for Christmas use, distinguishing it from an otherwise similar garden or forest tree.","An artificial or alternative assembly has a Christmas-tree role, distinguishing it from a botanical replica or unrelated tree-shaped sculpture.","Absence of ornaments or current display does not exclude a tree when its Christmas designation or intended seasonal reuse remains recorded."],"structure":{"bundles":[{"id":"christmas-role-and-identity","name":"Christmas role and identity","description":"Establishes why this particular tree or assembly counts as the registered thing.","layers":[{"id":"seasonal-designation","name":"Seasonal designation","description":"Records the evidence assigning a Christmas role to the object.","findings":[{"id":"basis-of-christmas-role","name":"Basis of Christmas role","description":"The model should distinguish explicit designation from an agent's interpretation of appearance.","questions":[{"text":"Who designated this object as a Christmas tree, or what observed use supports that identification?","id":"basis-of-christmas-role-q01","kind":"provenance"},{"text":"If it is undecorated or outside the Christmas season, what evidence establishes its continuing Christmas-tree role?","id":"basis-of-christmas-role-q02","kind":"boundary"}]}]},{"id":"tree-display-boundary","name":"Tree display boundary","description":"Identifies the focal tree and separates it from neighbouring seasonal displays.","findings":[{"id":"whole-tree-or-assembly","name":"Whole tree or assembly","description":"The model should identify the tree or coherent assembly being assessed and its relationship to a larger display.","questions":[{"text":"What physical tree or connected tree-shaped assembly constitutes this Christmas tree?","id":"whole-tree-or-assembly-q01","kind":"definition"},{"text":"Which surrounding garlands, gifts, scenery or additional trees belong to the wider display rather than this tree?","id":"whole-tree-or-assembly-q02","kind":"boundary"}]}]}]},{"id":"tree-body-and-construction","name":"Tree body and construction","description":"Captures the biological or manufactured body that supports the Christmas display.","layers":[{"id":"natural-or-manufactured-body","name":"Natural or manufactured body","description":"Determines which material and biological properties apply.","findings":[{"id":"body-type-and-composition","name":"Body type and composition","description":"The model should record whether the tree is cut, rooted, manufactured or assembled from alternative materials.","questions":[{"text":"Is this a cut tree, a tree with roots, an artificial tree or an alternative tree-shaped assembly?","id":"body-type-and-composition-q01","kind":"definition"},{"text":"What evidence identifies its species, construction materials and any applied surface treatments?","id":"body-type-and-composition-q02","kind":"provenance"}]}]},{"id":"display-form-and-completeness","name":"Display form and completeness","description":"Describes the assembled tree's envelope and branch-bearing structure.","findings":[{"id":"assembled-tree-envelope","name":"Assembled tree envelope","description":"The model should capture the installed form, including missing or damaged parts that affect decoration or placement.","questions":[{"text":"What are the tree's installed height and maximum width, including its stand and topper where applicable?","id":"assembled-tree-envelope-q01","kind":"measurement"},{"text":"Which trunk sections, branches or assembly joints are missing, damaged or positioned differently from the intended form?","id":"assembled-tree-envelope-q02","kind":"measurement"}]}]}]},{"id":"support-and-display-placement","name":"Support and display placement","description":"Connects the tree's installed structure to the space where people encounter it.","layers":[{"id":"base-and-anchorage","name":"Base and anchorage","description":"Records how the tree is held in its intended position.","findings":[{"id":"tree-to-support-connection","name":"Tree-to-support connection","description":"The model should make the stand, pot, base or suspension and its connection to the tree explicit.","questions":[{"text":"What supports this tree, and how is its trunk or frame attached to that support?","id":"tree-to-support-connection-q01","kind":"definition"},{"text":"What installation instructions or competent assessment establish whether this support suits the tree and its decorations?","id":"tree-to-support-connection-q02","kind":"provenance"}]}]},{"id":"surroundings-and-access","name":"Surroundings and access","description":"Captures placement relationships relevant to displaying and servicing the tree.","findings":[{"id":"decorated-tree-clearances","name":"Decorated tree clearances","description":"The model should record surrounding routes, heat sources, exposure and access needs without inventing universal clearance limits.","questions":[{"text":"What measured separations exist between the decorated tree and nearby heat sources, doors, circulation routes and overhead obstructions?","id":"decorated-tree-clearances-q01","kind":"measurement"},{"text":"What placement changes are required by applicable site rules or product instructions while preserving access for watering, inspection and switching off lights?","id":"decorated-tree-clearances-q02","kind":"action"}]}]}]},{"id":"ornaments-and-tree-lighting","name":"Ornaments and tree lighting","description":"Describes the decorative configuration attached to the Christmas tree.","layers":[{"id":"ornament-attachment","name":"Ornament attachment","description":"Records how decorations are distributed and held by the tree.","findings":[{"id":"branch-and-topper-loading","name":"Branch and topper loading","description":"The model should connect decorations to their supporting branches or frame and record visible attachment problems.","questions":[{"text":"Where are the topper and substantial ornament groups attached, and what supports each attachment?","id":"branch-and-topper-loading-q01","kind":"definition"},{"text":"Which decorations show slipping, branch deflection, breakage or unwanted contact that calls for adjustment or removal?","id":"branch-and-topper-loading-q02","kind":"action"}]}]},{"id":"lighting-installation","name":"Lighting installation","description":"Records tree-mounted lighting and the evidence governing its use.","findings":[{"id":"tree-lighting-operability","name":"Tree lighting operability","description":"The model should distinguish preinstalled and added lights and relate their condition and intended environment to the installed setting.","questions":[{"text":"Which lighting assemblies are installed, and what labels or instructions establish their intended environment and connection limits?","id":"tree-lighting-operability-q01","kind":"provenance"},{"text":"What observed damage, inaccessible controls or installation conflicts must be resolved before the lights are operated?","id":"tree-lighting-operability-q02","kind":"action"}]}]}]},{"id":"seasonal-care-and-transition","name":"Seasonal care and transition","description":"Tracks condition during display and the tree's next destination afterward.","layers":[{"id":"type-specific-display-care","name":"Type-specific display care","description":"Selects care observations according to the tree's actual body type.","findings":[{"id":"condition-and-care-needs","name":"Condition and care needs","description":"The model should record dated observations and evidence-based care needs separately for cut, rooted and manufactured trees.","questions":[{"text":"What dated observations describe foliage retention, water availability or root condition for a natural tree, or branch and joint condition for an artificial tree?","id":"condition-and-care-needs-q01","kind":"measurement"},{"text":"What care, repair or removal action is supported by these observations and the applicable supplier or specialist guidance?","id":"condition-and-care-needs-q02","kind":"action"}]}]},{"id":"end-of-display-route","name":"End-of-display route","description":"Records how the Christmas display is dismantled and what happens to its tree body.","findings":[{"id":"next-use-or-retirement","name":"Next use or retirement","description":"The model should distinguish storage for reuse, continued care of a rooted tree and locally supported routes for retiring the tree body.","questions":[{"text":"Is this tree intended for seasonal reuse, continued cultivation, transfer or retirement, and who is responsible for that transition?","id":"next-use-or-retirement-q01","kind":"action"},{"text":"Which ornaments, lights, treatments or support components must be removed or accounted for before the selected storage, planting or collection route can proceed?","id":"next-use-or-retirement-q02","kind":"action"}]}]}]},{"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.","layers":[{"id":"reported-evidence","name":"Reported evidence","description":"Findings from the breadth pass, kept separate from the structural claims.","findings":[{"id":"evidence-kinds","name":"Kinds and varieties","description":"Reported by the breadth pass; each item needs checking against its source before it becomes normative.","questions":[{"text":"Which of these kinds and varieties hold for the sense of Christmas tree this model covers, and on what evidence?","id":"evidence-kinds-q01","kind":"provenance"}]},{"id":"evidence-identifiers","name":"Identifiers and schemes","description":"Reported by the breadth pass; each item needs checking against its source before it becomes normative.","questions":[{"text":"Which of these identifiers and schemes hold for the sense of Christmas tree this model covers, and on what evidence?","id":"evidence-identifiers-q01","kind":"provenance"}]},{"id":"evidence-standards-and-regulation","name":"Standards and regulation","description":"Reported by the breadth pass; each item needs checking against its source before it becomes normative.","questions":[{"text":"Which of these standards and regulation hold for the sense of Christmas tree this model covers, and on what evidence?","id":"evidence-standards-and-regulation-q01","kind":"provenance"}]},{"id":"evidence-real-world-use","name":"Real-world use","description":"Reported by the breadth pass; each item needs checking against its source before it becomes normative.","questions":[{"text":"Which of these real-world use hold for the sense of Christmas tree this model covers, and on what evidence?","id":"evidence-real-world-use-q01","kind":"provenance"}]},{"id":"evidence-measurements","name":"Typical measurements","description":"Reported by the breadth pass; each item needs checking against its source before it becomes normative.","questions":[{"text":"Which of these typical measurements hold for the sense of Christmas tree this model covers, and on what evidence?","id":"evidence-measurements-q01","kind":"provenance"}]},{"id":"evidence-failure-modes-and-hazards","name":"Failure modes and hazards","description":"Reported by the breadth pass; each item needs checking against its source before it becomes normative.","questions":[{"text":"Which of these failure modes and hazards hold for the sense of Christmas tree this model covers, and on what evidence?","id":"evidence-failure-modes-and-hazards-q01","kind":"provenance"}]},{"id":"evidence-regional-variation","name":"Regional variation","description":"Reported by the breadth pass; each item needs checking against its source before it becomes normative.","questions":[{"text":"Which of these regional variation hold for the sense of Christmas tree this model covers, and on what evidence?","id":"evidence-regional-variation-q01","kind":"provenance"}]},{"id":"evidence-neighbours","name":"Neighbouring kinds and how to tell them apart","description":"Reported by the breadth pass; each item needs checking against its source before it becomes normative.","questions":[{"text":"Which of these neighbouring kinds and how to tell them apart hold for the sense of Christmas tree this model covers, and on what evidence?","id":"evidence-neighbours-q01","kind":"provenance"}]}]}]}]},"agentConduct":{"may":["Set up, water and decorate a Christmas tree on the household's instructions.","Remind the household to check lights for damage and to dispose of the tree properly."],"mustNot":["Use damaged lights or place candles on a dry tree.","Leave a dry tree near heaters or open flames.","Cut a tree from land where it has no permission.","Mock or exclude people who do or do not observe Christmas."],"requiresHuman":["Choosing to cut or buy a tree for the household."]},"ethics":{"considerations":["Traditions should be respected without being imposed on others.","Millions of cut trees raise questions of waste and sourcing."],"affectedParties":["Households","Children and pets","People of other faiths"]},"owners":{"steward":"The household or institution that displays it.","roles":[],"masterSystems":[]},"relations":[{"target":"Q641364","type":"parent","note":"registry parent class"}],"interaction":{"identity":{"applicability":"required","items":["Vercy registry: vr.tr.christmas-tree","Wikidata: Q47128 (https://www.wikidata.org/wiki/Q47128)"]},"properties":{"applicability":"not-applicable","items":["Christmas-tree designation: Person, organisation or event assigning the role; supporting statement or observation","Physical tree type: Cut natural tree | rooted natural tree | artificial tree | alternative tree-shaped assembly | unresolved","Species or construction materials: Identified species and/or material descriptions, with unknown components recorded","Installed dimensions: Height and maximum width in centimetres, stating whether stand and topper are included","Seasonal lifecycle stage: Selected | awaiting installation | installed | being decorated | on display | being dismantled | stored | transferred | retired","Support configuration: Tree linked to stand, pot, base, anchorage or suspension, with attachment condition","Decoration and lighting configuration: Attached ornament groups, topper and lighting assemblies with positions and attachment methods","Material condition: Dated observations of natural foliage and roots where present, or artificial branches, joints and surfaces","Display setting: Indoor | sheltered outdoor | exposed outdoor; private or publicly accessible"]},"recognition":{"applicability":"optional","items":["An evergreen conifer or artificial tree decorated with lights and ornaments.","Often topped with a star or angel and set indoors in winter."]},"capabilities":{"applicability":"required","items":["Identify the tree's Christmas role and select the applicable natural, artificial or alternative assessment path.","Assess a proposed position using installed dimensions, support requirements and surrounding activities.","Plan and record assembly, securing, decoration and lighting changes.","Schedule and record care or inspection appropriate to the tree's materials and observed condition.","Flag conditions requiring display changes, restricted interaction or qualified review.","Plan dismantling, storage, continued cultivation, transfer or material recovery according to tree type and local provisions."]},"hazards":{"applicability":"required","items":["Dry trees catch fire quickly and spread flames.","Ornaments and needles can harm small children and pets."]},"interfaces":{"applicability":"required","items":["NFPA 1, issued by the National Fire Protection Association, includes provisions for natural and artificial decorative vegetation where the code is adopted.","IEC 60598-2-20, issued by the International Electrotechnical Commission, specifies safety requirements for lighting chains used to decorate trees."]},"context":{"applicability":"required","items":["Christmas trees are displayed in homes, churches, workplaces and public spaces as part of seasonal celebrations.","They provide a focal point for ornaments, lighting, gatherings and gift placement."]}},"sources":[{"title":"Christmas tree","url":"https://www.britannica.com/plant/Christmas-tree","note":"Historical origin of the decorated evergreen as a Christmas custom, and the species commonly used as cut trees."},{"title":"Christmas Trees","url":"https://www.nrcs.usda.gov/conservation-basics/conservation-by-state/pennsylvania/christmas-trees","note":"Production of cultivated Christmas trees as a farm crop and typical commercial species in North America."},{"title":"Christmas Tree Safety Tips","url":"","note":"Fire hazard of dried cut trees, watering practice, and electrical-lighting precautions."},{"title":"Christmas tree (Q38551)","url":"https://www.wikidata.org/wiki/Q38551","note":"Canonical identifier for the decorated Christmas tree as a cultural object, distinct from the oil-well Christmas tree."},{"title":"Wikidata item Q47128: Christmas tree","url":"https://www.wikidata.org/wiki/Q47128","note":"identity and sense of the item"},{"title":"Wikipedia: Christmas tree","url":"https://en.wikipedia.org/wiki/Christmas_tree","note":"general description of the item"}],"openQuestions":["Does this registry entry include wall-mounted outlines, projected trees and purely digital Christmas trees, or only physical trees and tree-shaped assemblies?","What evidence is sufficient to retain Christmas-tree identity for a permanently planted tree between seasonal uses?","Which authoritative guidance should govern species-specific care and the transition of rooted trees between indoor display and outdoor cultivation?","Which jurisdictional, venue and product requirements govern support, lighting, placement and public interaction for each installation?","How should flocking, coatings and mixed construction materials affect locally available reuse, collection and material recovery routes?"],"resources":{"spec":"/models/things/publications/thing-q47128/spec.json"},"provenance":{"origin":"thing registry research (pass 2)","builtFrom":["models/things/publications/thing-q47128/spec.json"],"providers":["Codex","Grok"],"researchStatus":"unreviewed","generatedAt":"2026-09-07T11:14:48Z","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":"not-applicable","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 2026-10-07T12:16:33+00:00: completeness 1.00; sense: Wikidata description; 3 live sources; review by codex: pass","interaction.properties":"Plane ACT: no invented physical properties."},"score":1.0}}