Assertion: swan's number | /r/CapableOf | decline in many areas
Facets:
value: significantly again
type: DEGREE
value: in england
type: LOCATION
Source sentences:
text: More recently in the period from about 1960 up to the early 1980s, numbers declined significantly again in many areas in England, primarily due to lead poisoning from birds swallowing discarded fishing sinkers made from lead.