About: http://webisa.webdatacommons.org/267420058

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	In the embodiment of the invention shown in Fig. 1 there is a well casing 2 which may be understood as extending downwardly into the well to be pumped.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com