Assertion: feather | /r/ObjectUse | used for display
Facets:
value: in 8)
type: TEMPORAL
value: for creating negative lift
type: PURPOSE
Source sentences:
text: Although thermoregulatory effects of secondaries on the ulna would be negligible, such feathers could have been used for display (1), in shielding nests for thermal control (8), or for creating negative lift during incline running (9).