{"schema":"https://ver.cy/schemas/card/1.0.0","id":"vr.tr.third-declension-neuter-noun-with-genitive-plural-in-um-ium","code":"thing-q3984892","url":"https://ver.cy/models/thing/q3984892/","name":"third declension neuter noun with genitive plural in –um/-ium","alternateNames":[],"kind":"thing","status":"published","version":"0.2.0-wave.2","language":"en","classifiers":{"family":"Thing Registry","category":"Cross-cutting context","entryKind":"thing","plane":"XCT","domain":["XCT.REL"],"industry":[],"navPath":"","tags":[],"facets":{}},"whatItIs":"A class of Latin nouns of the third declension that are neuter in gender and form the genitive plural in -um or in -ium, the former being the consonant stem type such as nomen, nominum and corpus, corporum, and the latter the i-stem type such as mare, marium and animal, animalium, with the i-stems also showing ablative singular in -i and nominative plural in -ia; the class matters for correct parsing and formation of Latin forms.","purpose":"Let an agent explain this Latin noun class and its paradigm, distinguish consonant stem and i-stem neuters and their endings, support parsing and forming Latin nouns, and support Latin teaching.","scope":{"in":[],"out":[],"boundaries":[]},"distinguishingFeatures":["Neuter gender","Third declension","Consonant versus i-stem","Diagnostic endings"],"structure":{"bundles":[{"id":"understand","name":"Understand","description":"What the class is.","layers":[{"id":"paradigm","name":"Paradigm","description":"Paradigm.","findings":[{"id":"paradigm-finding","name":"Paradigm","description":"Paradigm.","questions":[{"text":"What are the full paradigms of consonant stem and i-stem neuter third declension nouns?","kind":"definition"},{"text":"Which stem type is meant?","kind":"boundary"}]}]},{"id":"membership","name":"Membership","description":"Membership rules.","findings":[{"id":"membership-finding","name":"Membership","description":"Membership.","questions":[{"text":"How can one tell whether a neuter third declension noun takes -um or -ium in the genitive plural?","kind":"definition"},{"text":"Which entry fits Latin declensions?","kind":"action"}]}]}]},{"id":"apply","name":"Apply","description":"Parsing and forming.","layers":[{"id":"parse","name":"Parse","description":"Parsing.","findings":[{"id":"parse-finding","name":"Parse","description":"Parsing.","questions":[{"text":"What is the case, number and stem type of this Latin form?","kind":"action"},{"text":"Which entry fits Latin morphology?","kind":"action"}]}]},{"id":"form","name":"Form","description":"Forming.","findings":[{"id":"form-finding","name":"Form","description":"Formation.","questions":[{"text":"How is a given case form of this noun built?","kind":"action"},{"text":"Which entry fits Latin composition?","kind":"action"}]}]}]},{"id":"linguistics","name":"Linguistics","description":"Historical background.","layers":[{"id":"origins","name":"Origins","description":"Origins of the endings.","findings":[{"id":"origins-finding","name":"Origins","description":"Origins.","questions":[{"text":"How did consonant stem and i-stem endings arise historically?","kind":"provenance"},{"text":"Which findings are contested?","kind":"boundary"}]}]},{"id":"variation","name":"Variation","description":"Variation in texts.","findings":[{"id":"variation-finding","name":"Variation","description":"Variation.","questions":[{"text":"How do classical and later texts vary in these forms?","kind":"provenance"},{"text":"Which references are standard?","kind":"provenance"}]}]}]},{"id":"learn","name":"Learn","description":"Teaching.","layers":[{"id":"teach","name":"Teach","description":"Teaching.","findings":[{"id":"teach-finding","name":"Teach","description":"Teaching.","questions":[{"text":"How can this class be taught with examples and drills?","kind":"action"},{"text":"Which misconceptions arise?","kind":"provenance"}]}]},{"id":"resources","name":"Resources","description":"Resources.","findings":[{"id":"resources-finding","name":"Resources","description":"Resources.","questions":[{"text":"Which grammars and tools are standard for Latin declensions?","kind":"provenance"},{"text":"Which entry fits Latin dictionaries?","kind":"action"}]}]}]}]},"agentConduct":{"may":["Classify a Latin third declension neuter noun by its genitive plural in -um or -ium.","Decline such nouns correctly and cite a standard grammar for disputed forms."],"mustNot":["Present a disputed or variant genitive plural as the only correct form without noting variation.","Invent Latin forms or attest them falsely to classical authors.","Mark a student's attested variant as wrong without checking the grammar.","Confuse neuter nouns with masculine or feminine nouns of the same declension."],"requiresHuman":["Grading a student's work where the correct form is disputed."]},"ethics":{"considerations":["Learners depend on accurate grammar; invented forms spread through teaching material.","Honest attribution to ancient authors protects the record of the language."],"affectedParties":["Students of Latin","Teachers","Scholars and editors"]},"owners":{"steward":"Nobody: a class in Latin grammar described by grammarians.","roles":[],"masterSystems":[]},"relations":[{"target":"Q7785052","type":"parent","note":"registry parent class"},{"target":"third declension","type":"related","note":"category"},{"target":"Zaliznyak classification","type":"related","note":"a comparable inflection class system for Russian"},{"target":"Latin script","type":"related","note":"the script of Latin"},{"target":"Romance","type":"related","note":"languages descended from Latin"}],"interaction":{"identity":{"applicability":"required","items":["Vercy registry: vr.tr.third-declension-neuter-noun-with-genitive-plural-in-um-ium","Wikidata: Q3984892 (https://www.wikidata.org/wiki/Q3984892)"]},"properties":{"applicability":"not-applicable","items":[]},"recognition":{"applicability":"optional","items":["Neuter third declension nouns","Genitive plural in -um or -ium","Masculine and feminine third declension nouns and other declensions are separate classes","Not physical; a grammatical class."]},"capabilities":{"applicability":"required","items":["explain the paradigm","distinguish stem types","support parsing and formation","support teaching"]},"hazards":{"applicability":"required","items":["Confusing consonant and i-stem endings","Misparsing forms","Overgeneralising rules"]},"interfaces":{"applicability":"required","items":["Standard Latin grammars","Curriculum standards for Latin","No regulation of the class"]},"context":{"applicability":"required","items":["Third declension neuter nouns by genitive plural.","consonant stem neuters with genitive plural in -um","i-stem neuters with genitive plural in -ium","neuters in -e, -al and -ar","neuters in -men and -us","irregular neuters"]}},"sources":[{"title":"Wikidata item Q3984892: third declension neuter noun with genitive plural in –um/-ium","url":"https://www.wikidata.org/wiki/Q3984892","note":"identity and sense of the item"},{"title":"Wikipedia (de): Dritte Deklination","url":"https://de.wikipedia.org/wiki/Dritte_Deklination","note":"general description of the item"}],"openQuestions":["Should the third declension be the primary entry?","How should grammar references be linked?","How should exercises be linked?"],"resources":{"spec":"/models/things/publications/thing-q3984892/spec.json"},"provenance":{"origin":"thing registry research (pass 2)","builtFrom":["models/things/publications/thing-q3984892/spec.json"],"providers":["Claude"],"researchStatus":"unreviewed","generatedAt":"2026-09-12T05:15:26Z","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 2026-10-08T19:09:53+00:00: completeness 1.00; sense: Wikidata description; 2 live sources; review by codex: pass","interaction.properties":"Plane XCT: no invented physical properties."},"score":1.0}}