What can be inferred from the following premises in a single inference step (ignoring inferences that add new predicates or constants)? forall x_9: U_2(x_9) -> Q_2(x_9). forall x_9: S(x_9) or P(x_9). forall x_9: ~Q_2(x_9). exists x_9: S(x_9) <-> U_2(x_9).
forall x_9: ~U_2(x_9). exists x_9: S(x_9) -> U_2(x_9). exists x_9: U_2(x_9) -> S(x_9).