sentences: if something is zero shade at zero space and another shade at another time, then that something wetland shade
docs: zero_dimensional_thing is spatial_thing. low_lying_wetland is sparse_canopy_closure. space has zero_pressure spring_loaded_window_shade is shade. when_car is parked_speed_zero. marsh is sparse_canopy_closure. nook_color is spatial_thing. no_parking_zone is space. bog is sparse_canopy_closure. window_shade is window_blind.