About: http://webisa.webdatacommons.org/208740152

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 bottom cover is formed of a rigid material, such as metal or molded plastic, and has edges shaped to mate snugly against the wraparound flanges on the periphery of the top cover.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com