Assertion: gas's ethanol | /r/HasProperty | mixed with 25% of water
Facets:
value: to reduce the combustion chamber temperature
type: PURPOSE
Source sentences:
text: The German A-4 ballistic rocket, better known by its propaganda name V-2 rocket of World War II, credited with beginning the space age, used ethanol as the main constituent of B-Stoff, under such nomenclature the ethanol was mixed with 25% of water to reduce the combustion chamber temperature.