About: http://webisa.webdatacommons.org/213775468

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	Again, the second rigid cylindrical barrel is preferably molded of a transparent material such as plastic to enable clear visual inspection of the interior of the vacuum chamber 44.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com