What can be inferred from the following premises in a single inference step (ignoring inferences that add new predicates or constants)? exists x: P_2(x) <-> T(x). forall x: P_2(x) -> W(x). forall x: ~T(x). forall x: W(x) -> P_2(x).
forall x: P_2(x) <-> W(x). forall x: W(x) <-> P_2(x). exists x: P_2(x) -> T(x). exists x: T(x) -> P_2(x). exists x: ~P_2(x).