sentences: a adaptation hare's congestion is nerves during winter
docs: geothallus is liverwort. sea_hare is gastropod. desert_hare is mammal. alaskan_hare is mammal. arctic is hare. polar_hare is hare. snowshoe_hare is hare. snow_in_summer is mouse_ear_chickweed. australian_hare's_foot is hare's_foot_fern.