Assertion: european polecat | /r/HasProperty | sole ancestor of the ferret
Facets:
Source sentences:
text: The European polecat is the sole ancestor of the ferret, which was domesticated more than 2000 years ago for the purpose of hunting vermin.
text: Morphological, cytological and molecular studies confirm the European polecat is the sole ancestor of the ferret, thus disproving any connection with the steppe polecat, which was once thought to have contributed to the ferret's creation.