Assertion: feather | /r/HasProperty | two-dimensional
Facets:
value: with a tapering central shaft
type: OTHER
value: essentially
type: DEGREE
value: in construction
type: OTHER
Source sentences:
text: They have a flat appearance and are two-dimensional in construction.
text: All feathers are constructed largely of keratin and are essentially two-dimensional with a tapering central shaft, the base of which is embedded in the feather socket or follicle (Voitkevich, 1966).