About: http://webisa.webdatacommons.org/131760997

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	The cover 60 may be -made of any suitable flexible material, such as sheet plastic or rubber, or of a fabric such as heavy water-proof canvas.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com