What can be inferred from the following premises in a single inference step (ignoring inferences that add new predicates or constants)? R_10(b_4) <-> S_10(b_4). forall x_10: R_10(x_10) -> S_10(x_10).
R_10(b_4) -> S_10(b_4). S_10(b_4) -> R_10(b_4).