What can be inferred from the following premises in a single inference step (ignoring inferences that add new predicates or constants)? exists x_12: S_4(x_12) or ~Q_12(x_12). forall x_12: S_4(x_12) -> Q(x_12). forall x_12: Q_12(x_12).
exists x_12: Q_12(x_12) -> S_4(x_12).