Task: Question Answering
Input (English): Context : Alfred Teumer (11 February 1918 -- 4 October 1944) was a German Luftwaffe flying ace during World War II and recipient of the Knight's Cross of the Iron Cross (German: Ritterkreuz des Eisernen Kreuzes). 
Question : What war or battle did Alfred Teumer fight in?
Output (English): World War II