About: http://webisa.webdatacommons.org/413615853

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	Clearly that satisfies an observer pattern and there is no doubt that will be useful but there are a lot of things that would be useful that are actually done because code provides flexibility where as the preprocessor does not.
http://www.w3.org/ns/prov#wasQuotedFrom	stackoverflow.com