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: r_8 -> R_17(a_17). S_17(a_17) -> q_8. q_8 -> r_8. forall x_17: R_17(x_17) -> S_17(x_17). ~S_17(a_17).
S_17(a_17) -> r_8 can be inferred via the transitivity rule. q_8 -> R_17(a_17) can be inferred via the transitivity rule.