Assertion: trumpeter swan's population | /r/HasProperty | about 22,000 birds
Facets:
value: as of the 2006–2007 winter
type: TEMPORAL
Source sentences:
text: The population in the United Kingdom is about 22,000 birds, as of the 2006–2007 winter, a slight decline from the peak of about 26,000–27,000 birds in 1990.