About: http://webisa.webdatacommons.org/42710388

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	Diamond is the hardest mineral known to man, Graphite is one of the softest.
http://www.w3.org/ns/prov#wasQuotedFrom	galleries.com