sentences: if an plant runoff a certain less then that plant ususally requires that mean of reptiles
docs: littering is polluting. runoff is surplus. grass_green_because has chlorophyll grass_snake is reptile. crop_plant is plant_kingdom. tomato_plant is crop_plant. sesame_plant is crop_plant. weeds is plants. serpent is reptile. central_american_river_turtle is reptile.