What can be inferred from the following premises in a single inference step (ignoring inferences that add new predicates or constants)? forall y: U_2(y) <-> P(y). forall y: U_2(y) or ~T(y). forall y: P(y) or T(y).
forall y: T(y) -> U_2(y). forall y: U_2(y) -> P(y). forall y: P(y) -> U_2(y).