About: http://webisa.webdatacommons.org/203718695

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	The simplest thing to do is just restrict the delete always and expect you will manually handle this case if it comes up (use a trigger for safety here).
http://www.w3.org/ns/prov#wasQuotedFrom	stackexchange.com