a fruit fly is a kind of fly
fruit_flies is very_small_flies. olive_fruit_fly is not fly. common_fruit_fly is not fruit_fly. mediterranean_fruit_fly is not fruit_fly. fruit_fly is not dipterous_insect. vinegar_fly is fruit_fly. common_fruit_fly is fruit_fly. mediterranean_fruit_fly is fruit_fly. olive_fruit_fly is fly. fruit_fly is dipterous_insect.