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.

Q: Context : Slash'EM (Super Lotsa Added Stuff Hack - Extended Magic) is a variant of the roguelike game NetHack that offers extra features, monsters, and items.
Subject : Slash'EM
Relation : based on

A: The Slash'EM is based upon what?
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Q: Context : The 1972 Thandwe crash occurred on 16 August 1972 near Thandwe, Burma.
Subject : 1972 Thandwe crash
Relation : point in time

A: On what date did 1972 Thandwe crash occur?
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Q: Context : W33A is a protostar located approximately 12,000 light-years away from Earth, in the constellation Sagittarius.
Subject : W33A
Relation : constellation

A:
What is the name of the constellation which W33A belongs?
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