What can be inferred from the following premises in a single inference step (ignoring inferences that add new predicates or constants)? forall x_13: S_4(x_13) -> S(x_13). exists x_13: T_2(x_13) <-> P(x_13). forall x_13: ~S(x_13). forall x_13: S_4(x_13) <-> T_2(x_13).
forall x_13: ~S_4(x_13). forall x_13: S_4(x_13) -> T_2(x_13). exists x_13: T_2(x_13) -> P(x_13). forall x_13: T_2(x_13) -> S_4(x_13). exists x_13: P(x_13) -> T_2(x_13).