sentences: animals laying down on command is an example of animals following order
docs: crouch is animal. guiding_animal is guiding. forward_flying_posture is animal. keeping_down is action_performed_by_animals. parading_show_dog is guiding_animal. plains_animals is animals. sitting_on is action_performed_by_animals. sitting_posture is animal. fallow_deer is mammal. pacing is animal_walking_process.