About: http://webisa.webdatacommons.org/30569737

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	Your original example counts not only regular files, but also directories and other devices -- if you really only want regular files (including symlinks to regular files), you will need to check them:
http://www.w3.org/ns/prov#wasQuotedFrom	stackexchange.com