counting with zero or one solid stays tend to lose those mammal
sea_mammal is non_person_animal. small_mammal is mammal. mammals has four_limbs yellow_sided_opossum is mammal. whales is mammals_without_legs. most_mammals has seven_neck_bones mammal_whole_body is tangible_thing. sitatunga is mammal. losing_one's_balance is action_performed_by_animals. trichloroethylene is tangible_thing.