Assertion: ostrich's feather | /r/HasProperty | gray
Facets:
Source sentences:
text: Male ostriches have black feathers and female ostriches have gray and brown feathers.
text: Ostriches have small head; male ostriches have black feathers and female ostriches have brown or grey feathers.
text: Male ostriches have black feathers and female ostriches have gray and brown feathers.
text: Male ostriches have black feathers and female ostriches have gray and brown feathers.