Assertion: raven's crow | /r/HasAspect | feather
Facets:
value: with blue
type: OTHER
value: with iridescent purple
type: OTHER
Source sentences:
text: The raven's feathers are all black, but a crow has feathers that are white at the bottom.
text: The raven's feathers are all black, but a crow has feathers that are white at the bottom.
text: Crows also have feathers with iridescent purple and blue, but with less sheen than the raven.