What can be inferred from the following premises in a single inference step (ignoring inferences that add new predicates or constants)? Name the inference rule being used: forall x: U(x) -> W(x). exists x: U(x) -> W(x). forall x: U(x) or ~W(x).
forall x: W(x) -> U(x) can be inferred via the universal rewriting rule.