About: http://webisa.webdatacommons.org/143183500

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	n (aimed principally at Russia, which is estimated to possess some 2,000, and the United States, which has around 500).
http://www.w3.org/ns/prov#wasQuotedFrom	wordpress.com