About: http://webisa.webdatacommons.org/56597173

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	Like Tehblanx points out that if you want to change the state of a variable that holds an immutable object, you have to create a new object, which can be expensive, especially if the object is big and complex.
http://www.w3.org/ns/prov#wasQuotedFrom	stackoverflow.com