About: http://webisa.webdatacommons.org/2004256

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	But your question does not state that you want to be able to later add more types without the need to change the original classes.
http://www.w3.org/ns/prov#wasQuotedFrom	stackoverflow.com