Assertion: lignite | /r/HasAspect | calorific value
Facets:
value: near 17 megajoules per kilogram
type: OTHER
Source sentences:
text: Lignite contains about 60 to 70 percent carbon (on a dry, ash-free basis) and has a calorific value near 17 megajoules per kilogram (7,000 British thermal units per pound).