About: http://webisa.webdatacommons.org/221014531

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	Variants copying and destruction is an example.it is a pity.I can not understand why can not I declare record destructors and copying constructors.
http://www.w3.org/ns/prov#wasQuotedFrom	barrkel.com