Let class C be in the domain of two binary relations R_1 and R_2. The relation (same-values C R_1 R_2) means that the values of the two relations are the same when applied to instances of the class.
(Nth-Domain Same-Slot-Values 3 Binary-Relation) (Nth-Domain Same-Slot-Values 2 Binary-Relation) (Nth-Domain Same-Slot-Values 1 Class) (<=> (Same-Slot-Values ?Class ?Slot1 ?Slot2) (And (Class ?Class) (Binary-Relation ?Slot1) (Binary-Relation ?Slot2) (Forall (?Instance ?Value) (=> (Instance-Of ?Instance ?Class) (<=> (Holds ?Slot1 ?Instance ?Value) (Holds ?Slot2 ?Instance ?Value))))))