About: http://webisa.webdatacommons.org/232096916

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	o flex open under pressure, while others use ball and spring designs or other means to open in order to control CSF pressure.
http://www.w3.org/ns/prov#wasQuotedFrom	sumobrain.com