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 : Allman was married to pop star Cher for the rest of the decade, while he continued his solo career with the Gregg Allman Band. 
Subject : Gregg Allman 
Relation : spouse

Output: What is Gregg Allman's spouse's name?


Input: Consider Input: Context : On November 21, 2013, the official Instagram Beta for Windows Phone was released to Windows Phone 8 to allow Windows Phone users faster access to Instagram services; although, at the time of release, the app was still under development. 
Subject : Instagram 
Relation : parent company

Output: What is Instagram's parent company?


Input: Consider Input: Context : XPL0 is a computer programming language that is essentially a cross between Pascal and C. It was created in 1976 by Peter J. R. Boyle who wanted a high-level language for his microcomputer and wanted something more sophisticated than BASIC, which was the dominant language for personal computers at the time. 
Subject : XPL0 
Relation : based on


Output: Which is the basis of XPL0?