Assertion: great black backed gull | /r/HasProperty | documented as a breeding species
Facets:
value: in 1982
type: TEMPORAL
value: on lake champlain
type: LOCATION
value: on the four brothers islands
type: LOCATION
Source sentences:
text: It was first documented as a breeding species on Lake Champlain on the Four Brothers Islands in 1982 and nested for the first time in Vermont on Young Island in 1983.