About: http://webisa.webdatacommons.org/402111414

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	when trying to overload the operator < with a non-member function, I get an error such as 'error: too many parameters for this operator function' :
http://www.w3.org/ns/prov#wasQuotedFrom	cplusplus.com