Assertion: fuel's percentage | /r/HasProperty | the octane number of the fuel
Facets:
value: in that mixture
type: LOCATION
Source sentences:
text: The octane rating of gasoline is measured in a test engine and is defined by comparison with the mixture of 2,2,4-trimethylpentane (iso-octane) and heptane that would have the same anti-knocking capacity as the fuel under test: the percentage, by volume, of 2,2,4-trimethylpentane in that mixture is the octane number of the fuel.