About: http://webisa.webdatacommons.org/154288587

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	would be an integer multiple of 2.pi. (i.e. 2n.pi., where n is an integer
http://www.w3.org/ns/prov#wasQuotedFrom	patents.com