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

Context : John Jaffer Janardhanan is a 1982 Malayalam movie directed by I. V. Sasi, written by T. Damodaran, and starring Ratheesh, Ravindran and Mammootty. 
Question : What was the name of the director for John Jaffer Janardhanan?
I. V. Sasi

Context : The Mark 10 torpedo was a torpedo put into use by the United States in 1915. 
Question : In what year did Mark 10 torpedo enter service?
1915

Context : Jane Stafford (1899--1991) was an American medical writer and chemist. 
Question : What is the date of Jane Stafford's death?

1991