Assertion: carbon | /r/HasProperty | available
Facets:
value: at low cost
type: MANNER
value: readily
type: MANNER
value: commercially
type: MANNER
Source sentences:
text: Carbon is available as artificial ones in all the three states.
text: C 76 , C 78 and C 84 are available commercially.
text: As carbon is readily available at low cost, CNFs are popular additives to composite materials.