About: http://webisa.webdatacommons.org/100219815

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	I agree that may be how it works on meta; however tags should enable different kinds of discussion, in much the same way that c and java on SO should mean questions are treated in the context of C or Java
http://www.w3.org/ns/prov#wasQuotedFrom	stackexchange.com