Assertion: gull | /r/HasProperty | long-lived birds
Facets:
Source sentences:
text: Gulls are long-lived birds that typically return to the same area to nest year after year, laying clutches of one to three eggs.
text: Gulls, particularly the large "white-headed" gulls, can be long-lived.
text: Gulls are long-lived birds - the larger species only start to breed when four years old and some can live to their upper twenties.