About: http://webisa.webdatacommons.org/175406828

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	Discard anything including special characters where there is no alpha-numeric string after them i.e. @helloworld.<space>, @helloworld-<space>, @helloworld.?, etc. must be parsed as @helloworld
http://www.w3.org/ns/prov#wasQuotedFrom	stackoverflow.com