an nation of a physical replacement is the land circuit
land_vehicle is land_transportation_device. landsailor is land_transportation_device. forklift is not land_vehicle. land_transportation_device is hexalateral_object. landsailor is not land_transportation_device. land_transportation_device is not hexalateral_object. landsailor is single_purpose_device. land_transportation_device is consumer_durable. forklift is land_vehicle. landsailor is not single_purpose_device.