About: http://webisa.webdatacommons.org/226857316

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	Similarly, the ring can be provided particularly on its inner surface defined by the central opening 34, with a coating of a suitable material such as alumina whereby to improve the particle retention capabilities of the entire unit.
http://www.w3.org/ns/prov#wasQuotedFrom	google.es