About: http://webisa.webdatacommons.org/413337317

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	If oil is used there nearly always is a door for adjusting the air flow, maintenance or for cleaning the oil jets.
http://www.w3.org/ns/prov#wasQuotedFrom	panoramio.com