About: http://webisa.webdatacommons.org/158614533

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	A disk of elastomeric material containing the plug is inserted in the holder, unless another convenient aperture exists on the system, such as a flange or threaded pipe connection.
http://www.w3.org/ns/prov#wasQuotedFrom	google.es