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

Ex Input:
Context : Melanie de Salignac (Marennes, Charente-Maritime, 19 January 1744 --1766) was a young French woman whose achievements in the face of her disability - blindness - were mentioned in the accounts of Diderot.
Question : What illness negatively impacted Melanie de Salignac?

Ex Output:
blindness

Ex Input:
Context : The QBZ-95 was first observed outside China on 1 July 1997, when the United Kingdom transferred the sovereignty of Hong Kong to the People's Republic of China.
Question : What year was QBZ-95 commissioned?

Ex Output:
1997

Ex Input:
Context : The 1924 Imperial Airways de Havilland DH.34 crash occurred on 24 December 1924 when de Havilland DH.34 G-EBBX of Imperial Airways crashed at Purley, Surrey, United Kingdom killing all eight people on board.
Question : What is the date when 1924 Imperial Airways de Havilland DH.34 crash happened?

Ex Output:
24 December 1924