What can be inferred from the following premises in a single inference step (ignoring inferences that add new predicates or constants)? forall x_16: Q_8(x_16) -> Q_4(x_16). forall x_16: R(x_16) -> T(x_16). forall x_16: T(x_16) -> Q_8(x_16). exists x_16: R(x_16) <-> Q_4(x_16).
forall x_16: R(x_16) -> Q_8(x_16). forall x_16: T(x_16) -> Q_4(x_16). exists x_16: R(x_16) -> Q_4(x_16). exists x_16: Q_4(x_16) -> R(x_16).