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_8: ~P_2(x_8) or P_4(x_8). forall x_8: Q_8(x_8) -> R_8(x_8). forall x_8: ~R_8(x_8). forall x_8: P_2(x_8) or W_2(x_8). forall x_8: R_8(x_8) -> W_2(x_8). forall x_8: W_2(x_8) -> Q_8(x_8).
forall x_8: ~Q_8(x_8) can be inferred via the universal modus tollens rule. forall x_8: Q_8(x_8) -> W_2(x_8) can be inferred via the universal transitivity rule. forall x_8: R_8(x_8) -> Q_8(x_8) can be inferred via the universal transitivity rule. forall x_8: W_2(x_8) -> R_8(x_8) can be inferred via the universal transitivity rule. forall x_8: W_2(x_8) or P_4(x_8) can be inferred via the universal resolution rule.