About: http://webisa.webdatacommons.org/390300257

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	If, on the other hand, re was a pointer to a std::vector<int> instead of a reference, then you would be correct in passing &_elems, since re would be an object it is data type is 'address of std::vector<int>'.
http://www.w3.org/ns/prov#wasQuotedFrom	derkeiler.com