Assertion: wren's bill | /r/HasProperty | dark
Facets:
Source sentences:
text: Bill is dark.
text: Medium sparrow with considerable geographic color variation, although all exhibit a pink bill, dark eyes, white belly, dark-centered tail with white outer feathers.
text: Sexes are similar, characterized by a long, slightly decurved bill, dark crown with a distinctive white stripe over the eye, white throat, gray-brown back streaked with white and black, and white to buff belly and sides, densely spotted at the breast.