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.

Example Input: Context : HD 16417 b (also called λ2 Fornacis b) is an extrasolar planet located approximately 84 light years away in the constellation of Fornax, orbiting the 6th magnitude G-type main sequence star HD 16417. 
Subject : HD 16417 b 
Relation : constellation
Example Output: What constellation is HD 16417 b in?

Example Input: Context : Vueling was established in February 2004 and commenced operations on 1 July 2004 with a flight between Barcelona and Ibiza. 
Subject : Vueling 
Relation : parent company
Example Output: What company is Vueling part of?

Example Input: Context : ISO 639 is a set of standards by the International Organization for Standardization that is concerned with representation of names for language and language groups. 
Subject : ISO 639 
Relation : standards body
Example Output:
Who set the standards for ISO 639?