Assertion: river otter | /r/HasProperty | driven to extinction
Facets:
value: by the early 20th century
type: TEMPORAL
value: by habitat loss
type: CAUSE
value: by over-trapping
type: CAUSE
value: by water pollution
type: CAUSE
Source sentences:
text: By the early 20th century, river otters had been driven nearly to extinction by over-trapping, habitat loss, and water pollution.