About: http://webisa.webdatacommons.org/309284437

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 first layer 18, which is situated immediately adjacent the radially outer tips of the fan blades 15, is solid so as to be structurally rigid and is formed from a suitable metal such as steel or aluminium.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com