What can be inferred from the following premises in a single inference step (ignoring inferences that add new predicates or constants)? forall z_4: Q_2(z_4) <-> Q(z_4). exists z_4: ~Q_2(z_4). forall z_4: Q_2(z_4) -> Q(z_4).
forall z_4: Q_2(z_4) -> Q(z_4). forall z_4: Q(z_4) -> Q_2(z_4). exists z_4: ~Q(z_4).