What can be inferred from the following premises in a single inference step (ignoring inferences that add new predicates or constants)? exists x: W_1(x) <-> T(x). forall x: T(x) -> W(x). forall x: W(x) -> W_1(x).
forall x: T(x) -> W_1(x). exists x: W_1(x) -> T(x). exists x: T(x) -> W_1(x).