Assertion: ferret's population | /r/HasProperty | pest
Facets:
value: sometimes
type: TEMPORAL
value: because of their burrowing activities
type: CAUSE
Source sentences:
text: Economic Importance for Humans: Positive Black-footed ferrets help control populations of prairie dogs, which are sometimes seen as pests because of their burrowing activities and because they as as reservoirs for zoonotic diseases such as bubonic plaque.