About: http://webisa.webdatacommons.org/236947300

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	I do not know C, but in .NET 1.1 before nullable types came out, a lot of people used to use things like the minimum value (int.MinValue).
http://www.w3.org/ns/prov#wasQuotedFrom	stackoverflow.com