What can be inferred from the following premises in a single inference step (ignoring inferences that add new predicates or constants)? forall y: W(y) -> Q_2(y). forall y: Q_2(y) -> T_1(y). exists y: T_1(y) -> W(y). forall y: ~T_1(y).
forall y: ~Q_2(y). forall y: W(y) -> T_1(y). exists y: T_1(y) -> Q_2(y). exists y: Q_2(y) -> W(y).