About: http://webisa.webdatacommons.org/336823593

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	and??? Emery: Long used as an abrasive or polishing material, particularly in sandpapers, it has largely been replaced by synthetic materials such as alumina.
http://www.w3.org/ns/prov#wasQuotedFrom	wordpress.com