Assertion: charcoal | /r/HasProperty | wood
Facets:
value: usually
type: DEGREE
Source sentences:
text: Charcoal is wood that's been heated up in a low-oxygen environment.
text: Charcoal is wood that has been burnt in the absence of oxygen to rid it of any impurities, leaving carbon.
text: Charcoal is wood that is burned down into almost pure carbon.
text: Charcoal is usually wood that has had nearly everything burned out of it: all of the water and volatile compounds are removed through slow, dry heat, leaving only carbon behind .