What can be inferred from the following premises in a single inference step (ignoring inferences that add new predicates or constants)? forall x_9: S_3(x_9) -> P(x_9). forall x_9: P(x_9) -> S_3(x_9). forall x_9: P(x_9) -> Q_5(x_9). forall x_9: Q_5(x_9) -> S_3(x_9).
forall x_9: S_3(x_9) -> Q_5(x_9). forall x_9: P(x_9) -> S_3(x_9). forall x_9: Q_5(x_9) -> P(x_9). forall x_9: S_3(x_9) <-> P(x_9). forall x_9: P(x_9) <-> S_3(x_9).