Assertion: anthracite | /r/HasProperty | prized
Facets:
value: especially
type: DEGREE
value: for higher energy output
type: CAUSE
value: for its lower level of impurities
type: CAUSE
Source sentences:
text: Every sort of coal was used extensively during the industrial revolution, and anthracite was especially prized for its lower level of impurities and higher energy output, which made it ideal for many industrial applications.