Generate a correct and concise answer for the question based on the words in the context.
Example: Context : Isaac Nicola Romero (1916 in Havana, Cuba -- 1997) was a prominent Cuban guitarist and one of the founders of the modern Cuban Guitar School. 
Question : What was Isaac Nicola's city of birth?
Example solution: Havana
Example explanation: According to context Issac Nicola's city of birth is Havana. Hence this is a correct output.

Problem: Context : 503 during the Normandy campaign on 11 July 1944; on the Eastern Front, the first unit to be outfitted with Tiger IIs was the s.H.Pz.Abt. 
Question : Which was the official year for the approval of Tiger II?

Solution: 1944