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_9: P_4(x_9). forall x_9: W_1(x_9) -> S_3(x_9). forall x_9: S_3(x_9) or ~P_4(x_9).
forall x_9: P_4(x_9) -> S_3(x_9) can be inferred via the universal rewriting rule.