What can be inferred from the following premises in a single inference step (ignoring inferences that add new predicates or constants)? ~W(i). u <-> q. q <-> U_1(i). forall z: W(z) <-> U_1(z).
u -> q. q -> U_1(i). q -> u. U_1(i) -> q. forall z: W(z) -> U_1(z). forall z: U_1(z) -> W(z).