What can be inferred from the following premises in a single inference step (ignoring inferences that add new predicates or constants)? exists x: T_3(x) -> P(x). forall x: P(x) -> T_3(x). forall x: T_3(x) or ~P(x).
forall x: P(x) -> T_3(x). exists x: T_3(x) <-> P(x). exists x: P(x) <-> T_3(x).