{"schema":"https://ver.cy/schemas/card/1.0.0","id":"vr.tr.citrus-limon","code":"thing-q500","url":"https://ver.cy/models/thing/q500/","name":"Citrus × limon","alternateNames":[],"kind":"thing","status":"published","version":"0.2.0-wave.4","language":"en","classifiers":{"family":"Thing Registry","category":"Physical world and living systems","entryKind":"thing","plane":"PHY","domain":["PHY.LIV"],"industry":[],"navPath":"","tags":[],"facets":{}},"whatItIs":"The lemon, a small evergreen citrus tree and its yellow oval fruit, botanically Citrus x limon, a hybrid of citron and sour orange, grown in warm temperate and subtropical regions for its acidic juice rich in citric acid and vitamin C, its aromatic peel and essential oil, and its use in food, drinks, cleaning and traditional remedies; major producers include India, Mexico and Argentina. Lemons are safe foods but their acidity can erode tooth enamel and irritate reflux, and lemon peel oil with sun exposure can cause phytophotodermatitis, a skin reaction.","purpose":"Let an agent explain the lemon, relay botany, cultivation, uses and nutrition from horticulture and food sources, note skin and dental cautions, and distinguish lemons from limes, citrons, Meyer lemons and rough lemons.","scope":{"in":[],"out":[],"boundaries":[]},"distinguishingFeatures":["Acidic yellow fruit","Aromatic peel oil","Hybrid origin","Year-round flowering in warm climates"],"structure":{"bundles":[{"id":"understand","name":"Understand","description":"What a lemon is.","layers":[{"id":"definition","name":"Definition","description":"Definition.","findings":[{"id":"definition-finding","name":"Definition","description":"Definition.","questions":[{"text":"What is a lemon, and how does it differ from limes, citrons, Meyer lemons and rough lemons?","kind":"definition"},{"text":"Is someone handling lots of lemon peel in the sun, which can cause a skin reaction, or worried about acidity and teeth?","kind":"boundary"}]}]},{"id":"varieties","name":"Varieties","description":"Varieties.","findings":[{"id":"varieties-finding","name":"Varieties","description":"Varieties.","questions":[{"text":"What are Eureka, Lisbon and Meyer lemons?","kind":"definition"},{"text":"Which entry fits the specific variety?","kind":"action"}]}]}]},{"id":"botany","name":"Botany","description":"Botany.","layers":[{"id":"origin","name":"Origin","description":"Hybrid origin.","findings":[{"id":"origin-finding","name":"Origin","description":"Origin.","questions":[{"text":"How did the lemon arise as a citrus hybrid?","kind":"provenance"},{"text":"Which references are standard?","kind":"provenance"}]}]},{"id":"cultivation","name":"Cultivation","description":"Cultivation.","findings":[{"id":"cultivation-finding","name":"Cultivation","description":"Cultivation.","questions":[{"text":"How and where are lemons grown?","kind":"provenance"},{"text":"Which sources are cited?","kind":"provenance"}]}]}]},{"id":"uses","name":"Uses","description":"Uses.","layers":[{"id":"culinary","name":"Culinary","description":"Culinary uses.","findings":[{"id":"culinary-finding","name":"Culinary","description":"Culinary.","questions":[{"text":"How are lemon juice, zest and preserved lemons used in cooking?","kind":"provenance"},{"text":"Which entry fits preserved lemon?","kind":"action"}]}]},{"id":"other","name":"Other","description":"Cleaning and oil.","findings":[{"id":"other-finding","name":"Other","description":"Other.","questions":[{"text":"How are lemon peel oil and juice used for cleaning and fragrance?","kind":"provenance"},{"text":"Is the information accurate?","kind":"boundary"}]}]}]},{"id":"context","name":"Context","description":"Health.","layers":[{"id":"nutrition","name":"Nutrition","description":"Nutrition.","findings":[{"id":"nutrition-finding","name":"Nutrition","description":"Nutrition.","questions":[{"text":"What do nutrition sources say about lemons and vitamin C, with claims attributed?","kind":"provenance"},{"text":"Is the presentation neutral and attributed?","kind":"boundary"}]}]},{"id":"skin","name":"Skin","description":"Phytophotodermatitis.","findings":[{"id":"skin-finding","name":"Skin","description":"Skin.","questions":[{"text":"Why can lemon peel and sunlight cause skin reactions?","kind":"provenance"},{"text":"Which entry fits phytophotodermatitis?","kind":"action"}]}]}]}]},"agentConduct":{"may":["Grow, harvest and store lemons following plant health and food hygiene rules.","Report pests or disease on lemon trees to the grower.","Report food uses and allergen or interaction information from reliable sources."],"mustNot":["Move lemon trees or cuttings across regions in breach of plant health rules.","Apply pesticides beyond label rates or near people and beehives.","Present lemon juice as a cure for disease or a substitute for medical treatment.","Mislabel fruit origin or organic status."],"requiresHuman":["Choosing spraying or treatment programmes for an orchard."]},"ethics":{"considerations":["Citrus diseases spread through moved plants and can destroy growers' livelihoods.","Harvest work often relies on seasonal workers who can be exploited."],"affectedParties":["Growers and farm workers","Consumers","Neighbouring orchards"]},"owners":{"steward":"The grower or person who owns the tree; plant health authorities regulate movement.","roles":[],"masterSystems":["Plant variety and plant health registers"]},"relations":[{"target":"Q11992872","type":"parent","note":"registry parent class"},{"target":"citrus","type":"related","note":"related"},{"target":"citron","type":"related"},{"target":"lime","type":"related"},{"target":"lemon essential oil","type":"related"}],"interaction":{"identity":{"applicability":"required","items":["Vercy registry: vr.tr.citrus-limon","Wikidata: Q500 (https://www.wikidata.org/wiki/Q500)"]},"properties":{"applicability":"required","items":["parentage: citron and sour orange hybrid note","vitamin C: about 53 mg per 100 g note - approximate","registry parent: useful plant note"]},"recognition":{"applicability":"required","items":["Yellow acidic citrus fruit of Citrus x limon","Lemon","Limes are green and often smaller; citrons have thick peel and little pulp; Meyer lemons are sweeter hybrids; rough lemons have bumpy skin","A yellow oval citrus fruit with a nippled end, growing on a thorny evergreen tree with fragrant white flowers."]},"capabilities":{"applicability":"required","items":["explain botany and cultivation","relay culinary and other uses","relay nutrition","note skin and dental cautions"]},"hazards":{"applicability":"required","items":["Tooth enamel erosion","Phytophotodermatitis from peel oil and sun","Reflux irritation"]},"interfaces":{"applicability":"required","items":["Food safety and organic standards","Pesticide residue limits"]},"context":{"applicability":"required","items":["Food, flavouring, cleaning and vitamin C source.","common lemons such as Eureka and Lisbon","Meyer lemon","rough lemon","variegated lemons"]}},"sources":[{"title":"Wikidata item Q500: Citrus × limon","url":"https://www.wikidata.org/wiki/Q500","note":"identity and sense of the item"},{"title":"Wikipedia: Lemon","url":"https://en.wikipedia.org/wiki/Lemon","note":"general description of the item"}],"openQuestions":["Should Meyer lemon be a separate entry?","How should production statistics be linked?","Should lemon essential oil be a separate entry?"],"resources":{"spec":"/models/things/publications/thing-q500/spec.json"},"provenance":{"origin":"thing registry research (pass 2)","builtFrom":["models/things/publications/thing-q500/spec.json"],"providers":["Claude"],"researchStatus":"unreviewed","generatedAt":"2026-09-14T01:45:57Z","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 2026-10-06T19:52:00+00:00: completeness 1.00; sense: Wikidata description; 2 live sources; review by codex: pass"},"score":1.0}}