What can be inferred from the following premises in a single inference step (ignoring inferences that add new predicates or constants)? S_7(a_7) <-> q_4. ~q_4. forall x_7: P_2(x_7) <-> S_7(x_7).
S_7(a_7) -> q_4. q_4 -> S_7(a_7). ~S_7(a_7). forall x_7: P_2(x_7) -> S_7(x_7). forall x_7: S_7(x_7) -> P_2(x_7).