sentences: plants are part of the bilogical kingdom plantae
docs: plantae is kingdom. crop_plant is plant_kingdom. c_3_plant is plant_kingdom. plant_kingdom is plant_material. cyanea_undulata is plant_kingdom. herbaceous_plant is plant_kingdom. c_4_plant is plant_kingdom. plant_kingdom is eukaryotic_organism. carnivorous_plant is plant_kingdom. annual_plant is plant_kingdom.