What can be inferred from the following premises in a single inference step (ignoring inferences that add new predicates or constants)? forall x_6: R(x_6) or U_2(x_6). forall x_6: R(x_6) -> W_2(x_6). forall x_6: W_2(x_6) or ~U_2(x_6). exists x_6: U(x_6).
forall x_6: U_2(x_6) -> W_2(x_6).