Assertion: pelican's wing | /r/CapableOf | compress air
Facets:
value: to greater density
type: PURPOSE
Source sentences:
text: He hops aboard thermal updrafts, soaring up to ten thousand plus feet—then flies low, skimming the water surface, wings compressing air to greater density, getting a “ground effect,” an upward draft beneath him, and conserves energy, a vital issue to pelicans who travel daily up to ninety-three miles in single file lines or sometimes in V formation to and from feeding grounds.