About: http://webisa.webdatacommons.org/116785115

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 valve member 920 may be constructed of rubber or other suitable material resilient enough to spring back into the closed position of FIG. 9.
http://www.w3.org/ns/prov#wasQuotedFrom	google.ca