sky is a edge of the characteristics kinetic matter of an preposition
sky is not higher_than_land. imposition is burden. sky is gas. sky is not atmosphere. composition_of_earth is 0.4_percent_aluminum. frame_for_prepositions is not subcategorization_frame. wheel_rolling is axis_constrained_multirevolution_rotation. wind is movement_of_air. imposition is not burden. sky is atmosphere.