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 U(x_11). forall x_11: Q_1(x_11) -> P_7(x_11). forall x_11: P_7(x_11) or ~R_11(x_11). exists x_11: U(x_11) -> Q_1(x_11). forall x_11: ~P_11(x_11) or R_11(x_11).
exists x_11: U(x_11) -> P_7(x_11). forall x_11: U(x_11) or R_11(x_11). forall x_11: R_11(x_11) -> P_7(x_11).