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.
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Question: Context : Delta Air Lines Flight 9570 crashed on 30 May 1972 at the Greater Southwest International Airport in Fort Worth, Texas, while conducting a training flight.
Subject : Delta Air Lines Flight 9570
Relation : point in time

Answer: The date of Delta Air Lines Flight 9570?

Question: Context : Half a Bride is a 1928 American silent romance film directed by Gregory La Cava and starring Esther Ralston, Gary Cooper, and William Worthington.
Subject : Half a Bride
Relation : production company

Answer: What production company was involved in Half a Bride?

Question: Context : It has an absolute magnitude of -9.2, which translates to a total luminosity of 360,000 times that of the Sun. Messier 15 is one of the most densely packed globulars known in the Milky Way galaxy.
Subject : Messier 15
Relation : constellation

Answer:
The star Messier 15 is a part of the constellation named what?