About: http://webisa.webdatacommons.org/447749757

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	posted on Apr, 7 2011 @ 02:28 PM link I wondered about this too, especially the ones that are underwater, like is thought of the Yonaguni monuments.
http://www.w3.org/ns/prov#wasQuotedFrom	abovetopsecret.com