About: http://webisa.webdatacommons.org/270901581

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	US Postal Service Documents Every Piece of Mail: New York Times: ???The Mail Isolation Control and Tracking program was created after the anthrax attacks in late 2001 that killed five people, including two postal workers.
http://www.w3.org/ns/prov#wasQuotedFrom	slate.com