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 : NGC 339 is a globular cluster in the constellation Tucana the Toucan. 
Subject : NGC 339 
Relation : constellation

SOLUTION: Which constellation is NGC 339 in?

PROBLEM: Context : The 1972 Thandwe crash occurred on 16 August 1972 near Thandwe, Burma. 
Subject : 1972 Thandwe crash 
Relation : point in time

SOLUTION: On what date did 1972 Thandwe crash occur?

PROBLEM: Context : ``Baba Yetu'' has been performed at various venues and events around the world, including The Dubai Fountain, the Kennedy Center, Royal Festival Hall, the Hollywood Bowl, the Dorian Festival of Luther College, and the New Year's Concert of the sixty-seventh session of the United Nations General Assembly. 
Subject : Baba Yetu 
Relation : based on

SOLUTION:
Which is the basis of Baba Yetu?