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Entity > Abstract > Class > Relation > Predicate > holds

holds
subject			fact

holds	documentation (holds P N1 ... NK) is true just in case the tuple of objects denoted by N1,..., NK is an element of the Relation P
	has domain1 Relation
	is an instance of Predicate
	is an instance of VariableArityRelation
Predicate	is first domain of singleValued
VariableArityRelation	has axiom (=> (instance ?REL VariableArityRelation) (not (exists (?INT) (valence ?REL ?INT))))
Relation	is second domain of subrelation
Class	is third domain of domain
	is third domain of domainSubclass
Abstract	is disjoint from Physical