Assertion: domestic sheep's wool | /r/ObjectUse | used for mat
Facets:
value: usually
type: TEMPORAL
Source sentences:
text: The wool, which is a mixture of gray wool and black guard hair, is usually used for rugs, mats, and wall hangings.
text: Romanov wool (a mixture of gray wool and black guard hair) is used for rugs, mats, and wall hangings.