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). forall x: T(x) <-> P(x). exists x: T(x) <-> S(x).
forall x: T(x) -> P(x). exists x: T(x) -> S(x). forall x: P(x) -> T(x). exists x: S(x) -> T(x). exists x: ~T(x).