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.

Ex Input:
Context : The novel's tensions begin with young David Mountolive on the Hosnani estate, where he has begun an affair with Leila Hosnani, mother of Nessim and Narouz. 
Subject : Mountolive 
Relation : series

Ex Output:
What is the series that Mountolive is a part of?


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

Ex Output:
Which is the basis of Christine Daaé?


Ex Input:
Context : British Airways merged with Iberia on 21 January 2011, formally creating the International Airlines Group (IAG), the world's third-largest airline group in terms of annual revenue and the second-largest in Europe. 
Subject : British Airways 
Relation : parent company

Ex Output:

What is British Airways's parent company?