About: http://webisa.webdatacommons.org/390087332

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	As far as I could find out, this has the following reason: When the green + sign is clicked the second time, the current form is post to the web server, including the data currently in the form (Client and all exchange files).
http://www.w3.org/ns/prov#wasQuotedFrom	stackoverflow.com