Assertion: duck's bill | /r/HasProperty | slate
Facets:
value: with a dark tip
type: OTHER
Source sentences:
text: The bill is slate with a white border around the base and nares, and a pale white band behind the black tip.
text: The bill is slate with a faint white band near the tip.
text: The female bills are slate with a dark tip that is separated by a blue ring.