About: http://webisa.webdatacommons.org/398112484

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	You need to compile your code with more debug information - then valgrind will be able to show you more information such as file, function and line.
http://www.w3.org/ns/prov#wasQuotedFrom	stackoverflow.com