Given the task definition, example input & output, solve the new input case.
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?
Output: Havana
According to context Issac Nicola's city of birth is Havana. Hence this is a correct output.

New input case for you: Context : The LD&ECR Class D was a class of nine 0-6-4T steam locomotives supplied to the Lancashire, Derbyshire and East Coast Railway in 1904 and 1906 by Kitson & Co. of Leeds. 
Question : What was the year LD&ECR Class D entered service?
Output:
1904