What can be inferred from the following premises in a single inference step (ignoring inferences that add new predicates or constants)? forall x_11: P_11(x_11) or Q_11(x_11). exists x_11: P_4(x_11) or Q_4(x_11). forall x_11: ~P_11(x_11). forall x_11: ~P_4(x_11).
forall x_11: Q_11(x_11). exists x_11: Q_4(x_11).