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

Example Input: Context : Daffy Duck's Quackbusters is a 1988 Looney Tunes/Merrie Melodies film with a compilation of classic Warner Bros. Cartoons shorts and animated bridging sequences, starring Daffy Duck. 
Question : What production company or companies created Daffy Duck's Quackbusters?
Example Output: Warner Bros.

Example Input: Context : The Samozaryadnaya Vintovka Tokareva, Obrazets 1940 goda (``Tokarev Self-loading Rifle, Model of 1940'', Russian: Самозарядная винтовка Токарева, образец 1940 года) or SVT-40 is a Soviet semi-automatic battle rifle. 
Question : What was the year that SVT-40 entered service?
Example Output: 1940

Example Input: Context : Shirley Graham Du Bois died of breast cancer on March 27, 1977, aged 80, in Beijing, China, where she had gone for treatment. 
Question : What did Shirley Graham Du Bois die of?
Example Output:
breast cancer