About: http://webisa.webdatacommons.org/131167531

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	One system is devoted to letters and other first class mail, and the other system, for bulk mailing, is used to sort packages, magazines advertising, circulars and other large mails.
http://www.w3.org/ns/prov#wasQuotedFrom	google.co.uk