if an preposition is discarded in a leo then that preposition is forms
parabolic_mirror is parabolic_reflector. being_drunk is altered_state_of_consciousness. preposition_of is preposition. temporal_preposition is preposition. preposition is function_word. preposition is adposition. préposition is adposition. primitive_recursive_function is recursive_function. downward_parabolic_trajectory is parabolic_trajectory.