Assertion: ibis's feather | /r/HasProperty | white
Facets:
Source sentences:
text: Most ibises have white, black, or brown feathers.
text: The Ibis has mainly white feathers, with black tips.
text: Despite being revered in other times and cultures, it seems the ibis' vulture-like bald head and inability to keep its white feathers clean is too much to bear for many city dwellers.