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 connected comparison table
 have domain2 have domain1 be first domain of be second domain of documentation have axiom is a kind of is an instance of Subject BinaryPredicate singleValued inverse A Predicate relating two items - its valence is two `(=> (instance ?REL BinaryPredicate) (valence ?REL 2))` Predicate ReflexiveRelation trichotomizingOn inverse Relation ?REL is reflexive if (?REL ?INST ?INST) for all ?INST `(=> (instance ?REL ReflexiveRelation) (forall (?INST) (holds ?REL ?INST ?INST)))` BinaryRelation SpatialRelation valence subrelation The Class of Relations that are spatial in a wide sense. This Class includes mereological relations, topological relations, and positional relations `(=> (and (instance ?REL SpatialRelation) (holds ?REL ?OBJ1 ?OBJ2)) (overlapsTemporally (WhenFn ?OBJ1) (WhenFn ?OBJ2)))` Relation SymmetricRelation trichotomizingOn inverse A BinaryRelation ?REL is symmetric just in case (?REL ?INST1 ?INST2) imples (?REL ?INST2 ?INST1), for all ?INST1 and ?INST2 `(=> (instance ?REL SymmetricRelation) (forall (?INST1 ?INST2) (=> (holds ?REL ?INST1 ?INST2) (holds ?REL ?INST2 ?INST2))))` BinaryRelation connected Object Object valence subrelation (connected ?OBJ1 ?OBJ2) means that ?OBJ1 meetsSpatially ?OBJ2 or that ?OBJ1 overlapsSpatially ?OBJ2 `(=> (crosses ?OBJ1 ?OBJ2) (not (connected ?OBJ1 ?OBJ2)))` SymmetricRelation

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