About: http://webisa.webdatacommons.org/53539628

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	over a decade, with others joining in the effort, but Doug Bower and Dave Chorley confessed to the deception in 1991, in this video: Here is a time lapse video of two people making a crop circle with similar tools to Bower and Chorley.
http://www.w3.org/ns/prov#wasQuotedFrom	abovetopsecret.com