Assertion: black swan's feather | /r/HasProperty | half way
Facets:
value: between contour feathers
type: LOCATION
value: between down
type: LOCATION
Source sentences:
text: Other feathers that appear on birds are Semi plumes which appear half way between contour feathers and down feathers, Filoplumes which are small and are believed to have sensory functions, Bristles which are stiff hairs that appear around the eyes and mouth of some birds and function as protective hairs and Powder feathers which grow continuously and help keep the plumage clean.