Assertion: hummingbird's tail feather | /r/HasProperty | outer
Facets:
Source sentences:
text: Hummingbirds cannot make the courtship dive sound when missing their outer tail feathers, and those same feathers could produce the dive-sound in a wind tunnel.
text: Hummingbirds cannot make the courtship dive sound when missing their outer tail feathers, and those same feathers could produce the dive-sound in a wind tunnel.