What can be inferred from the following premises in a single inference step (ignoring inferences that add new predicates or constants)? forall x_6: P(x_6) -> Q_6(x_6). forall x_6: P_6(x_6) or ~Q_6(x_6). exists x_6: P(x_6) or Q(x_6). forall x_6: Q(x_6) -> P_6(x_6).
forall x_6: Q_6(x_6) -> P_6(x_6).