Assertion: black footed ferret | /r/CapableOf | roam north america
Facets:
value: for hundreds of years
type: TEMPORAL
Source sentences:
text: Black-footed ferrets once roamed North America, making their homes in grassy areas.
text: Black Footed Ferrets have roamed North America for hundreds of years, whereas domesticated ferrets only came to the United States in the past century or so.