About: http://webisa.webdatacommons.org/255593428

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	Set the TextBox.ReadOnly property to true.(See e.g. the article Creating a Read-Only Text Box on MSDN.)
http://www.w3.org/ns/prov#wasQuotedFrom	stackoverflow.com