About: http://webisa.webdatacommons.org/412142687

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 base 12 and the cover 14 may be made of any relatively rigid material, such as sheet metal, but preferably are made of a molded plastic, such as PVC, polyethylene, or polypropylene.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com