About: http://webisa.webdatacommons.org/156882113

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	Several variations on the basic idea have been described, making it possible to find answers for many different types of questions, or apply the concept in a wider set of circumstances.
http://www.w3.org/ns/prov#wasQuotedFrom	freepatentsonline.com