Assertion: ground squirrel's den | /r/HasProperty | lined with thistledown
Facets:
value: usually
type: TEMPORAL
Source sentences:
text: The dens are usually lined with moss plants, thistledown, dried grass, and feathers.
text: The dens of the squirrels are lined with mosses, dried plants and thistledown, which help in the insulation of the den and reduces heat loss.