You will be given a context, a subject and a relation. Your task is to generate a question based on the subject and relation. The generated question should include the given subject. Try to use a minimum number of words that are not present in either context, subject or relation while generating question.

Context : Balamani Amma died on 29 September 2004 after having suffered from Alzheimer's disease for nearly five years. 
Subject : Balamani Amma 
Relation : medical condition
What medical condition did Balamani Amma have at the end of his life?

Context : Private's Progress is a 1956 British comedy film based on the novel by Alan Hackney. 
Subject : Private's Progress 
Relation : based on
The Private's Progress is based upon what?

Context : The Vympel NPO R-77 missile (NATO reporting name: AA-12 Adder) is a Russian medium range, active radar homing air-to-air missile system. 
Subject : R-77 
Relation : service entry

In which year was the service entry date for R-77?