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 : DMPI launched its wireless service, known as Sun Cellular, in March 2003. 
Subject : Sun Cellular 
Relation : parent company
Which company is the parent company of Sun Cellular?

Context : Jaroslav Drobný was also a member of the Czechoslovakian national ice hockey team which won the gold medals at the 1947 World Ice Hockey Championships in Prague. 
Subject : Jaroslav Drobný 
Relation : residence
What city is Jaroslav Drobný from?

Context : Nils Dardel (full name Nils Elias Kristofer von Dardel, sometimes known as Nils de Dardel) was a 20th-century Swedish Post-Impressionist painter, grandson to famous Swedish painter Fritz von Dardel. 
Subject : Nils Dardel 
Relation : spouse

What is Nils Dardel's spouse's name?