want is a reaction of the bird of energy in an preposition
conditioned_emotional_response is emotion. activation_energy is energy. backlash is reaction. emotions is reflexive_reactions. going_to_sleep is not action_performed_by_animals. answer is reaction. going_to_sleep is action_performed_by_animals. tropism is reaction. nesting is action_performed_by_animals. reflexive_action is action_on_object.