What can be inferred from the following premises in a single inference step (ignoring inferences that add new predicates or constants)? forall x_11: S(x_11) <-> U(x_11). forall x_11: Q_3(x_11) -> U(x_11). exists x_11: S(x_11) -> Q_3(x_11).
exists x_11: S(x_11) -> U(x_11). forall x_11: S(x_11) -> U(x_11). forall x_11: U(x_11) -> S(x_11).