About: http://webisa.webdatacommons.org/339922232

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	So, instead of checking if there is a transaction to add an item, the Add method is in the transaction itself.
http://www.w3.org/ns/prov#wasQuotedFrom	codeproject.com