What can be inferred from the following premises in a single inference step (ignoring inferences that add new predicates or constants)? forall x_17: R_17(x_17) -> S_17(x_17). S_17(a_17) -> q_8. t -> R_17(a_17). ~S_17(a_17). q_8 -> t.
S_17(a_17) -> t. q_8 -> R_17(a_17).