What can be inferred from the following premises in a single inference step (ignoring inferences that add new predicates or constants)? forall x_4: W_1(x_4). forall x_4: P_2(x_4). forall x_4: U_1(x_4) or R(x_4). forall x_4: U_1(x_4) -> ~W_1(x_4).
forall x_4: ~U_1(x_4). forall x_4: W_1(x_4) and P_2(x_4). forall x_4: P_2(x_4) and W_1(x_4).