Assertion: eagle | /r/CapableOf | use thermal updrafts
Facets:
value: to gain the saor
type: PURPOSE
value: to gain great altitude
type: PURPOSE
Source sentences:
text: When migrating, eagles seldom flap their wings; rather, they use thermal updrafts to gain great altitude and the saor in a long, descending glide within which they can hit 50-75 mph easily.