About: http://webisa.webdatacommons.org/200712187

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 journal or casing 21 is a hollow unitary member having an enlarged upper cylindrical or top portion 22 from which extends a radially extending and reduced annulus 31 which has the oppositely disposed slots 24, 25.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com