@prefix dcterms: <http://purl.org/dc/terms/> .
@prefix edu: <https://knobit.org/def/> .
@prefix knobit: <https://knobit.org/id/knobit/> .
@prefix rdfs: <http://www.w3.org/2000/01/rdf-schema#> .
@prefix register: <https://knobit.org/id/register/> .
@prefix schema: <https://schema.org/> .
@prefix skos: <http://www.w3.org/2004/02/skos/core#> .

knobit:K-655 a edu:Knobit ;
    rdfs:label "Explains null semantics and three-valued logic"@en ;
    dcterms:identifier "K-655",
        "Q-393" ;
    dcterms:license <https://creativecommons.org/licenses/by/4.0/> ;
    dcterms:source "Data-management practice used by the stage 6 reference and review checklist"@en,
        "Shared-URI copy of data-modelling K-655 (Data-management practice used by the stage 6 reference and review checklist)"@en ;
    skos:definition "What a null means, and how predicates evaluate to UNKNOWN."@en ;
    skos:prefLabel "Explains null semantics and three-valued logic"@en ;
    edu:actionVerb "Explains"@en ;
    edu:assessmentCriterion "Predicts how sample predicates treat nulls"@en ;
    edu:assessmentMethod "Written question with sample physical tables"@en ;
    edu:contextFunction <https://knobit.org/def/contextFunction/objectUnderstanding> ;
    edu:creationMethod <https://knobit.org/def/creationMethod/aiGenerated>,
        <https://knobit.org/def/creationMethod/aiGeneratedAiEdited> ;
    edu:dependsOnKnobit knobit:K12-8017,
        knobit:K12-8018 ;
    edu:expectedResult "What a null means, and how predicates evaluate to UNKNOWN"@en ;
    edu:graphRelevance <https://knobit.org/def/graphRelevance/learnerState>,
        <https://knobit.org/def/graphRelevance/outcomeContent> ;
    edu:knobitType <https://knobit.org/def/knobitType/knowledge> ;
    edu:targetObject "null semantics"@en ;
    schema:creativeWorkStatus "accepted" ;
    schema:isPartOf register:data-modelling,
        register:data-quality .

edu:Knobit rdfs:label "Knobit"@en,
        "Knobit"@et .

knobit:K12-8017 rdfs:label "Explains the concepts of a proposition and its truth value"@en,
        "Selgitab loogikalause ja tõeväärtuse mõistet"@et .

knobit:K12-8018 rdfs:label "Explains the meaning of negation, conjunction and disjunction"@en,
        "Selgitab eituse, konjunktsiooni ja disjunktsiooni tähendust"@et .