About: http://webisa.webdatacommons.org/209153191

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	The stones themselves are the best source but few people can travel around and measure all of them.
http://www.w3.org/ns/prov#wasQuotedFrom	tripod.com