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: q_3 -> R(a_7). forall x_8: R(x_8) -> Q_8(x_8). R(a_7) -> q_3. forall x_8: ~Q_8(x_8).
forall x_8: ~R(x_8) can be inferred via the universal modus tollens rule.