About: http://webisa.webdatacommons.org/426480141

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 issue appears to whether or not the diaphragm moves more or less as a whole, i.e. like a piston.
http://www.w3.org/ns/prov#wasQuotedFrom	head-fi.org