About: http://webisa.webdatacommons.org/417599952

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 apparatus for aerating water, including rigid supporting pipes, which serve to supply air, and covers which are disposed on the supporting pipes close thereto and are provided with a plurality of resiliently expandable slits.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com