TASK DEFINITION: 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.
PROBLEM: Context : After Attila's death in 453 AD, his Empire crumbled and its remains were ruled by his three sons, Ellac, Dengizich and Ernak. 
Subject : Ellac 
Relation : date of death

SOLUTION: On what date did Ellac die?

PROBLEM: Context : Anthony Salvin (17 October 1799 -- 17 December 1881) was an English architect. 
Subject : Anthony Salvin 
Relation : date of death

SOLUTION: The death of Anthony Salvin occured on what date?

PROBLEM: Context : Sang Penari touches on the history of communism in Indonesia, focusing on the nation's communist party spreading its ideology and the government's purge of the Communist Party's members from 1965--1966, which is thought to have killed several hundred thousand. 
Subject : Sang Penari 
Relation : based on

SOLUTION:
The Sang Penari is based upon what?