About: http://webisa.webdatacommons.org/324318355

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	In place of a ring, a spring or other device could hold the microporous disc in place.
http://www.w3.org/ns/prov#wasQuotedFrom	google.fr