About: http://webisa.webdatacommons.org/202753872

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	However, such removable attachments may not be used to conceal personal information, such as a PIN number, or to prevent the Postal Service from examining the visible message without defacing the double post card.
http://www.w3.org/ns/prov#wasQuotedFrom	postcom.org