30 / observation populations liter / land / mammal to the part mind
populated_area is site. web_footed_tenrec is mammal. mammal_auditory_system is body_part. prototheria is not mammal. mammal_eye is vertebrate_eye. mammal_eye is body_part. prototheria is mammal. 10_of_population is not colour_blind. mammals has large_brains 10_of_population is colour_blind.