What can be inferred from the following premises in a single inference step (ignoring inferences that add new predicates or constants)? forall x_5: P_2(x_5). exists x_5: T(x_5) -> U_2(x_5). forall x_5: P_2(x_5) <-> U_2(x_5).
forall x_5: P_2(x_5) -> U_2(x_5). forall x_5: U_2(x_5) -> P_2(x_5).