About: http://webisa.webdatacommons.org/157451350

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	It is preferred that the rotors and casing be of different materials to allow for problems such as temperature expansions, etc.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com