About: http://webisa.webdatacommons.org/328966277

Property	Value
http://www.w3.org/1999/02/22-rdf-syntax-ns#type	http://www.w3.org/ns/prov#Entity
http://www.w3.org/ns/prov#value	Coal is a hard, black substance found in deposits of sedimentary rock.
http://www.w3.org/ns/prov#wasQuotedFrom	hypertextbook.com