TASK DEFINITION: Generate a correct and concise answer for the question based on the words in the context.
PROBLEM: Context : Karl-Wilhelm von Schlieben (30 October 1894 -- 18 June 1964) was a German officer in World War I and World War II.
Question : Which war did Karl-Wilhelm von Schlieben participate in?

SOLUTION: World War I

PROBLEM: Context : Leonardo Daniel (Spanish pronunciation: (leonaro anjel); born 1954) is a Mexican actor and director.
Question : What was Leonardo Daniel's occupation?

SOLUTION: actor

PROBLEM: Context : The British Rail Class 55 is a class of diesel locomotive built in 1961 and 1962 by English Electric.
Question : What year was the service entry date for British Rail Class 55?

SOLUTION:
1961