About: http://webisa.webdatacommons.org/152177915

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 has proved diflicult, however, to attain for each; flame the most appropriate proportion between the quantities sup.-. plied of gaseous fuel and combustion-sustaining medium such as air or oxygen.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com