About: http://webisa.webdatacommons.org/416981426

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	Additionally, inside plunger 258 is a one-way valve such as a spring-loaded ball 258a within a bypass passage 258b.
http://www.w3.org/ns/prov#wasQuotedFrom	google.ca