Assertion: carbon | /r/HasProperty | recovered
Facets:
value: in order to drive
type: PURPOSE
value: by heating these materials
type: MANNER
value: from coal
type: OTHER
value: from wood
type: OTHER
Source sentences:
text: Carbon can be recovered from coal or wood by heating these materials in the absence of air in order to drive of volatile materials and leave behind raw carbon, also referred to as "coke".