What can be inferred from the following premises in a single inference step (ignoring inferences that add new predicates or constants)? forall x: Q(x) or ~U_4(x). forall x: Q(x) -> T(x). exists x: T(x) -> Q(x).
forall x: U_4(x) -> Q(x). exists x: T(x) <-> Q(x). exists x: Q(x) <-> T(x).