What can be inferred from the following premises in a single inference step (ignoring inferences that add new predicates or constants)? S_15(a_15) -> q_1. q_4 -> R_15(a_15). q_1 -> p_2. forall x_15: R_15(x_15) -> S_15(x_15).
S_15(a_15) -> p_2.