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 : The Ellgaard family therefore moved to Munich, where Helmuth Ellgaard participated in starting the illustrated magazine Revue, which was one of the many new weekly magazines in post-war West Germany. 
Subject : Helmuth Ellgaard 
Relation : date of death
What is the date of death for Helmuth Ellgaard?

Context : Twofish was designed by Bruce Schneier, John Kelsey, Doug Whiting, David Wagner, Chris Hall, and Niels Ferguson; the ``extended Twofish team'' who met to perform further cryptanalysis of Twofish and other AES contest entrants included Stefan Lucks, Tadayoshi Kohno, and Mike Stay. 
Subject : Twofish 
Relation : based on
Which is the basis of Twofish?

Context : Intars Busulis (born 2 May 1978 in Talsi, Latvia) is a Latvian singer who represented Latvia at the Eurovision Song Contest 2009 in Moscow, Russia with the song Probka (Russian for ``Traffic jam''). 
Subject : Intars Busulis 
Relation : occupation

What was Intars Busulis's occupation?