What can be inferred from the following premises in a single inference step (ignoring inferences that add new predicates or constants)? S_12(a_12) -> S_3(a_10). forall z: ~S_3(z). forall x_12: R_12(x_12) <-> S_12(x_12).
forall x_12: R_12(x_12) -> S_12(x_12). forall x_12: S_12(x_12) -> R_12(x_12).