What can be inferred from the following premises in a single inference step (ignoring inferences that add new predicates or constants)? forall z_1: ~W(z_1). forall z_1: W(z_1) or R(z_1). exists z_1: R_3(z_1) <-> T(z_1). forall z_1: R(z_1) -> T(z_1).
forall z_1: R(z_1). exists z_1: R_3(z_1) -> T(z_1). exists z_1: T(z_1) -> R_3(z_1).