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Sigma KEE - SymmetricRelation
KB Term: 
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SymmetricRelation
A BinaryRelation ?REL is symmetric just iff (?REL ?INST1 ?INST2) imples (?REL ?INST2 ?INST1), for all ?INST1 and ?INST2.
Relationships      
Parents BinaryRelation BinaryRelations are relations that are true only of pairs of things. BinaryRelations are represented as slots in frame systems.
Children EquivalenceRelationA BinaryRelation is an equivalence relation if it is a ReflexiveRelation, a SymmetricRelation, and a TransitiveRelation.


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