What can be inferred from the following premises in a single inference step (ignoring inferences that add new predicates or constants)? T_2(j_4) -> r. forall x_12: T_2(x_12) <-> S_12(x_12). r -> S_12(j_4).
T_2(j_4) -> S_12(j_4). forall x_12: T_2(x_12) -> S_12(x_12). forall x_12: S_12(x_12) -> T_2(x_12).