Assertion: gull's number | /r/CapableOf | remain stable
Facets:
value: from 1977
type: TEMPORAL
value: relatively
type: DEGREE
value: to 1990
type: TEMPORAL
Source sentences:
text: Although the total number of Laughing Gulls in North America remained relatively stable from 1977 to 1990, local populations are increasing in many parts of the United States (Belant and Dolbeer 1993).