What can be inferred from the following premises in a single inference step (ignoring inferences that add new predicates or constants)? forall x_10: R_10(x_10) <-> S_10(x_10). S_10(a_10). t -> R_10(a_10).
exists x: S_10(x). forall x_10: R_10(x_10) -> S_10(x_10). forall x_10: S_10(x_10) -> R_10(x_10).