Instructions: 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.
Input: Context : Cargolux Flight 7933 was a cargo flight which was involved in an accident on 21 January 2010 in which it landed on a vehicle that was on an active runway. 
Subject : Cargolux Flight 7933 
Relation : point in time
Output:
On what date did Cargolux Flight 7933 take place?