About: http://webisa.webdatacommons.org/258403203

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	FIG. 4 is a graph schematically showing a concentration of unburnt HC and CO and oxygen in exhaust gas discharged from the engine;
http://www.w3.org/ns/prov#wasQuotedFrom	google.co.uk