What can be inferred from the following premises in a single inference step (ignoring inferences that add new predicates or constants)? forall x: T(x) <-> P_4(x). forall x: ~P(x). forall x: T(x) -> P(x). exists x: P(x) -> T(x).
forall x: ~T(x). exists x: P(x) <-> T(x). exists x: T(x) <-> P(x). forall x: T(x) -> P_4(x). forall x: P_4(x) -> T(x).