What can be inferred from the following premises in a single inference step (ignoring inferences that add new predicates or constants)? forall x: P(x) -> S_3(x). exists x: T(x). forall x: S_3(x) -> P(x). forall x: W(x) -> ~T(x). forall x: W(x) <-> P(x).
exists x: ~W(x). forall x: P(x) <-> S_3(x). forall x: S_3(x) <-> P(x). forall x: W(x) -> P(x). forall x: P(x) -> W(x).