What can be inferred from the following premises in a single inference step (ignoring inferences that add new predicates or constants)? forall y: W_2(y) -> U_4(y). forall y: S(y) or ~T(y). forall y: U_4(y) -> P(y). exists y: P(y) -> T(y). forall y: S(y) -> W_2(y).
forall y: W_2(y) -> P(y). forall y: S(y) -> U_4(y). exists y: U_4(y) -> T(y). forall y: T(y) -> S(y).