in the sugar land solution, the insolvent is land
irrigated_land is not field. queen_maud_land is not country. irrigated_land is cultivable_land. irrigated_land is field. adélie_land is not country. irrigated_land is not cultivable_land. irrigated_land is unnatural_thing. revenue_land is not land. adélie_land is country. irrigated_land is not unnatural_thing.