31.   The Grand Foyer is a glistening forest of frosted birch trees.

32.   The humble outbuildings, the bare muddy yard, the copses of birch trees create an impression of rustic simplicity.

33.   The second act begins not in summer but bleak winter, snow falling among giant birch trees.

34.   The site is covered in small birch trees, dwarf shrubs, herbs and grasses.

35.   The stage was bare until shortly before the performance, when stage hands matter-of-factly arranged birch trees and rustic outdoor furniture on the stage.

36.   They swerve to miss a fox and slam into a birch tree.

37.   Which English-language curses invoke the majesty of birch trees?

38.   Xylitol, which is derived from birch trees, is found in several popular sugarless gums.

39.   Curved backdrops picture a grove of thin birch trees.

40.   Finland, the world leader in xylitol production, makes the sweetener from the wood sugars found in birch trees.