What can be inferred from the following premises in a single inference step (ignoring inferences that add new predicates or constants)? forall x_9: W_1(x_9) <-> P_5(x_9). forall x_9: ~Q_5(x_9). forall x_9: W_1(x_9) -> U_2(x_9). forall x_9: U_2(x_9) -> W_1(x_9). forall x_9: P_5(x_9) -> Q_5(x_9).
forall x_9: ~P_5(x_9). forall x_9: W_1(x_9) <-> U_2(x_9). forall x_9: U_2(x_9) <-> W_1(x_9). forall x_9: W_1(x_9) -> P_5(x_9). forall x_9: P_5(x_9) -> W_1(x_9).