What can be inferred from the following premises in a single inference step (ignoring inferences that add new predicates or constants)? exists x_5: ~S(x_5). forall x_5: T_4(x_5) -> S(x_5). forall x_5: S(x_5) -> T_4(x_5).
exists x_5: ~T_4(x_5). forall x_5: T_4(x_5) <-> S(x_5). forall x_5: S(x_5) <-> T_4(x_5).