About: http://webisa.webdatacommons.org/125002247

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	From what I know and think now: The using namespace std; should not be used in header files because by including the header file somewhere else you include the std namespace into your global space.
http://www.w3.org/ns/prov#wasQuotedFrom	codeproject.com