About: http://webisa.webdatacommons.org/53726700

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	Could it be that your site requires a login, and the AJAX Calls are not carrying over the session, for example because the browser has cookies disabled?
http://www.w3.org/ns/prov#wasQuotedFrom	stackoverflow.com