About: http://webisa.webdatacommons.org/247921427

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	First of all, there is a theoretical upper limit on the thermal efficiency of any heat engine that has to do with the system temperature versus the environment temperature.
http://www.w3.org/ns/prov#wasQuotedFrom	wisegeek.com