About: http://webisa.webdatacommons.org/269986312

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	Envelopes have been used for mailing documents, letters, money and other such things since a very long time.
http://www.w3.org/ns/prov#wasQuotedFrom	blogspot.com