About: http://webisa.webdatacommons.org/147777301

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 end of the piston shaft extending outwardly from the reservoir is preferably connected by a fitting to a section of plastic tubing having a vented cap which contains a lubricating fluid such as water.
http://www.w3.org/ns/prov#wasQuotedFrom	google.es