What can be inferred from the following premises in a single inference step (ignoring inferences that add new predicates or constants)? forall z_2: S(z_2) -> T_2(z_2). forall z_2: S(z_2) -> T_2(z_2). ~T_2(g). forall z_2: T_2(z_2) -> S(z_2).
forall z_2: S(z_2) <-> T_2(z_2). forall z_2: S(z_2) <-> T_2(z_2). forall z_2: T_2(z_2) <-> S(z_2). forall z_2: T_2(z_2) <-> S(z_2).