Assertion: birch's bark | /r/HasProperty | obtained
Facets:
value: from trees
type: LOCATION
value: usually
type: DEGREE
Source sentences:
text: Bark is usually obtained from trees that have been felled for timber and can be distilled at any time of the year.
text: The bark is usually obtained from trees that have been felled for timber and can be distilled at any time of the year.