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: forall z_3: W_4(z_3) -> W(z_3). forall z_3: W(z_3) -> W_4(z_3). forall z_3: S(z_3) -> W_4(z_3).
forall z_3: S(z_3) -> W(z_3) can be inferred via the universal transitivity rule. forall z_3: W_4(z_3) <-> W(z_3) can be inferred via the universal biconditional introduction rule. forall z_3: W(z_3) <-> W_4(z_3) can be inferred via the universal biconditional introduction rule.