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 -> r_4. r_4 -> R_15(a_15). forall x_15: R_15(x_15) -> S_15(x_15). S_15(a_15) -> s. p_16 -> q.
q -> R_15(a_15) can be inferred via the transitivity rule. p_16 -> r_4 can be inferred via the transitivity rule.