About: http://webisa.webdatacommons.org/281365792

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	This proved to be difficult, not because applying the rules was a problem, but simply because we tended to overlook the appropriate units on the map or lost track of them when they disappeared into the red-black sea.
http://www.w3.org/ns/prov#wasQuotedFrom	wordpress.com