Assertion: exhaust gas | /r/HasProperty | nitrogen oxides
Facets:
value: usually
type: TEMPORAL
value: due to the high temperatures
type: CAUSE
value: due to high pressures
type: CAUSE
Source sentences:
text: Due to the high temperatures and high pressures involved, exhaust gases from gasoline combustion in car engines usually include nitrogen oxides which are responsible for creation of photochemical smog.