What can be inferred from the following premises in a single inference step (ignoring inferences that add new predicates or constants)? forall x: S(x) <-> P_1(x). forall x: T_2(x) or ~P_1(x).
forall x: P_1(x) -> T_2(x). forall x: S(x) -> P_1(x). forall x: P_1(x) -> S(x).