21.   Under some lighting conditions, lenticular clouds have been reported as unidentified flying objects.

22.   In flat lighting conditions as was the case Monday, workers scatter pine boughs over a race course so help racers see.

23.   In flat lighting conditions as was the case Monday, workers scatter pine boughs over a race course to help racers see.

24.   It depends on the lighting conditions on the stage.

25.   Italy played here twice under the same lighting conditions.

26.   Only nine bodies were recovered by late Friday night and the search was abandoned due to poor lighting conditions.