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_6: P_6(x_6) or W_2(x_6). forall x_6: ~P_6(x_6) or Q(x_6). forall x_6: Q(x_6) -> Q_1(x_6). forall x_6: Q_1(x_6) -> R_1(x_6). forall x_6: W_2(x_6) -> R_1(x_6).
forall x_6: Q(x_6) -> R_1(x_6) can be inferred via the universal transitivity rule. forall x_6: W_2(x_6) or Q(x_6) can be inferred via the universal resolution rule.