Assertion: x engine | /r/HasProperty | developed including rolls-royce exe
Facets:
value: during world war ii
type: TEMPORAL
Source sentences:
text: Several prototype 24-cylinder X engines for military aircraft were developed during World War II, including the Daimler-Benz DB 604, Rolls-Royce Exe and Isotta Fraschini Zeta R.C. 24/60, along with the 16-cylinder Napier Cub.