Assertion: ferret | /r/AtLocation | north america
Facets:
value: via the bering land bridge
type: MANNER
value: as help
type: PURPOSE
value: by ships
type: OTHER
Source sentences:
text: Ferrets came to North America by ships, as help to control rat problem on ships or as pets.
text: Ferrets probably got their start 3 or 4 million years ago in Europe and came to North America at least 100,000 years ago via the Bering Land Bridge, which connected Siberia to Alaska during the most recent ice age.3.