What can be inferred from the following premises in a single inference step (ignoring inferences that add new predicates or constants)? Name the inference rule being used: exists z: W(z) <-> P(z). forall z: W(z) -> P(z).
exists z: W(z) -> P(z) can be inferred via the existential biconditional elimination rule. exists z: P(z) -> W(z) can be inferred via the existential biconditional elimination rule.