Assertion: raven's feather | /r/AtLocation | the front of the head
Facets:
value: at the base of the beak
type: LOCATION
Source sentences:
text: The pencil sketch depicts the crest as a tuft of rounded feathers attached to the front of the head at the base of the beak, and shows long primary covert feathers, large secondary feathers, and a slightly bifurcated tail.