The feathers vibrate, producing a sound often described as a "winnowing."
(a sound; described; as a "winnowing; T:often) (The feathers; vibrate; ) Context(The feathers vibrate,List([0, 20))):(The feathers; vibrate producing; a sound often described as a "winnowing)
The feathers vibrate,List([0, 20))
a sound The feathers The feathers
described vibrate vibrate producing
as a "winnowing T:often
a sound often described as a "winnowing