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: p_2 or w_4. ~p_2 or W(a_8). forall x_8: W(x_8) -> S_8(x_8). w_4 -> S_8(a_8).
w_4 or W(a_8) can be inferred via the resolution rule. R_1(a_8) -> ~p_2 can be inferred via the rewriting rule.