About: http://webisa.webdatacommons.org/228159786

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	An annular sleeve 35 made of suitable material, such as canvas, is fixed to the diaphragm 32 at the top and bottom of the annular sponge 33 to retain the tubular plastic ring 34 in a fixed position relative to the diaphragm 32.
http://www.w3.org/ns/prov#wasQuotedFrom	google.fr