About: http://webisa.webdatacommons.org/308485241

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	And of course there is the most sensational explanation, that the object (especially the circular one) is related to extraterrestrial activity -- based on its "spaceship-like shape it has invited the description of Baltic Sea UFO.
http://www.w3.org/ns/prov#wasQuotedFrom	blogspot.co.at