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