Assertion: toucan's bird | /r/CapableOf | fly in formation
Facets:
value: often
type: TEMPORAL
value: to reduce air resistance
type: PURPOSE
Source sentences:
text: Flocking birds (especially those who travel large distances) often fly in formations to reduce air resistance and conserve energy.
text: : Flocking birds (especially those who travel large distances) often fly in formations to reduce air resistance and conserve energy.