Assertion: tern | /r/CapableOf | nest on flat gravel rooftops
Facets:
value: sometimes
type: TEMPORAL
value: near beaches
type: LOCATION
Source sentences:
text: Least Terns sometimes nest on flat gravel rooftops, usually near beaches, a habit which has its own hazards; hot tar can become stuck in the chick's down or burn the feet of chicks.