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