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_2(x_6) -> W(x_6). exists x_6: W(x_6) or ~U(x_6). forall x_6: U(x_6).
exists x_6: U(x_6) -> W(x_6).