About: http://webisa.webdatacommons.org/55352416

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	Though polyethylene is preferred for the inner and outer envelopes, materials such as Mylar, polypropylene, and others with similar properties, may be used.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com