Assertion: fur seal | /r/HasProperty | killed for blubber
Facets:
value: in the 1800s
type: TEMPORAL
value: extensively
type: DEGREE
value: in 1900s
type: TEMPORAL
Source sentences:
text: The fur seals were extensively killed for their fur and blubber in the 1800s and 1900s, driving them to the brink of extinction on the mainland.