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: Consider Input: Context : Delta Centauri ( Cen, Centauri) is a star in the southern constellation of Centaurus.
Subject : Delta Centauri
Relation : constellation

Output: Which constellation is Delta Centauri a part of?

Input: Consider Input: Context : Christine Daae was born in a town near Uppsala, Sweden.
Subject : Christine Daae
Relation : based on

Output: Which is the basis of Christine Daae?

Input: Consider Input: Context : Alternate names include Ruhrstahl SD 1400 X, Kramer X-1, PC 1400X or FX 1400 (the latter, along with the unguided PC 1400 ordnance's Fritz nickname, is the origin for the name ''Fritz X'').
Subject : Fritz X
Relation : service entry
Output: What year did Fritz X come into use?