Assertion: graphite | /r/HasProperty | produced
Facets:
value: artificially
type: MANNER
value: by heating cokes
type: CAUSE
value: by metamorphosing organic material
type: MANNER
Source sentences:
text: Graphite is produced by metamorphosing organic material originally deposited as sediment or mixed with sediment.
text: Graphite can also be manufactured.
text: However graphite is now artificially produced by heating cokes (another carbon allotrope) at high temperatures.