About: http://webisa.webdatacommons.org/441856563

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	Oil is the hardest challenge because it represents a very cheap carbon material compared to what you can make with it.
http://www.w3.org/ns/prov#wasQuotedFrom	rsc.org