Assertion: grape's effect | /r/Causes | leaf
Facets:
value: to take on shades of red
type: PURPOSE
Source sentences:
text: The effects of cold, sun and even age, will cause leaves to take on shades of red to nearly purple, providing a rich tapestry of color when joined with the bronze-red color of its new growth, the bright yellow of the flowers and the dusky blue of the berries.