About: http://webisa.webdatacommons.org/170417964

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	There are some classes missing so it is difficult to say what is going on with your code but there is a problem with your logic in your getUnsold() method.
http://www.w3.org/ns/prov#wasQuotedFrom	javaprogrammingforums.com