Assertion: hummingbird's wing | /r/CapableOf | twist 90 degrees
Facets:
value: at the end of the downstroke
type: TEMPORAL
Source sentences:
text: At the end of the downstroke, the wings twist 90 degrees.
text: By filling the air with a fine mist using an ultrasonic fogger, researchers can observe the tornado-like vortices that this Anna’s hummingbird sheds at the end of each half-stroke—when its wings flip more than 90 degrees and reverse course.