About: http://webisa.webdatacommons.org/8554027

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 upper ends of the tubes 11 are closed by discs 17 formed of wood or other suitable material ,which'are inserted in I said. ends andare held'in position :by split spring rings 18 embracing the tubes and said discs...
http://www.w3.org/ns/prov#wasQuotedFrom	google.com