sentences: messages of sky people were lost at the kidney mountain
docs: sky has clouds sky_burial is funeral. lost_tribes is tribes_of_israel. people_fly_in_airplanes has wings high_mountains has snow_on member_of_underwaters_hills is underwater. mountain_fever is fever. mountain is there_to_climbed. member_of_underwaters_hills is hill. mountain_sickness is altitude_sickness.