Generate a correct and concise answer for the question based on the words in the context.

Q: Context : Designated MA-31 in US service, the first launch of the missile took place in August 1996. 
Question : In which year was the service entry date for MA-31?

A: 1996
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Q: Context : Based on the TR-77-580 (Romanian-built version of the Soviet T-55 tank), the TR-85 tank was developed from 1978 to 1985 and produced from 1986 until 1990. 
Question : Which was the official year for the approval of TR-85?

A: 1986
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Q: Context : Udo Cordes (22 July 1921 -- 7 March 2007) was a highly decorated Oberleutnant in the Luftwaffe during World War II, and a recipient of the Knight's Cross of the Iron Cross. 
Question : What award was received by Udo Cordes?

A:
Knight's Cross of the Iron Cross
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