About: http://webisa.webdatacommons.org/312748118

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 piston 30 is generally cup-shaped and made of a suitable resilient material, such as rubber.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com