What can be inferred from the following premises in a single inference step (ignoring inferences that add new predicates or constants)? forall x: ~P_1(x). forall x: T(x) <-> P_1(x). exists x: T(x) or W(x).
forall x: T(x) -> P_1(x). forall x: P_1(x) -> T(x). forall x: ~T(x).