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Sigma KEE - QuaternaryRelation
KB Term: 
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quaternary relation
QuaternaryRelations relate four items. The two subclasses of QuaternaryRelation are QuaternaryPredicate and TernaryFunction.
Relationships      
Parents inheritable relation The class of Relations whose properties can be inherited downward in the class hierarchy via the subrelation Predicate.
  relation The Class of relations. There are two kinds of Relation: Predicate and Function. Predicates and Functions both denote sets of ordered n-tuples. The difference between these two Classes is that Predicates cover formula-forming operators, while Functions cover term-forming operators.
Children quaternary predicateThe Class of Predicates that require four arguments.
 ternary functionThe Class of Functions that require exactly three arguments.


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