About: http://webisa.webdatacommons.org/273699646

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	As a result, graphene is the most expensive material known to man, costing approximately $1 per square micron. 4 New, high-yield, cheap ways to make graphene are urgently needed.
http://www.w3.org/ns/prov#wasQuotedFrom	blogspot.com