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 y_4: R_2(y_4) -> W_3(y_4). forall y_4: W(y_4) or R_2(y_4). forall y_4: W_3(y_4) or ~W(y_4). forall y_4: U(y_4).
forall y_4: W(y_4) -> W_3(y_4) can be inferred via the universal rewriting rule.