What can be inferred from the following premises in a single inference step (ignoring inferences that add new predicates or constants)? forall x_11: P(x_11) -> U(x_11). forall x_11: U(x_11) -> P(x_11). forall x_11: R_4(x_11) -> ~R(x_11). forall x_11: R_4(x_11) <-> T(x_11). forall x_11: R(x_11). forall x_11: T(x_11) <-> U(x_11).
forall x_11: ~R_4(x_11). forall x_11: P(x_11) <-> U(x_11). forall x_11: U(x_11) <-> P(x_11). forall x_11: R_4(x_11) -> T(x_11). forall x_11: T(x_11) -> U(x_11). forall x_11: T(x_11) -> R_4(x_11). forall x_11: U(x_11) -> T(x_11).