Assertion: charcoal | /r/ObjectUse | used for thousands of years
Facets:
value: for its ink-like properties
type: PURPOSE
value: in medicine
type: LOCATION
value: as a heating source
type: PURPOSE
Source sentences:
text: Charcoal has been used for medicinal purposes for thousands of years.
text: Before the briquette was in use, charcoal had been used for thousands of years as a heating source, in medicine and for its ink-like properties.