TASK DEFINITION: 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.
PROBLEM: Context : NGC 339 is a globular cluster in the constellation Tucana the Toucan. 
Subject : NGC 339 
Relation : constellation

SOLUTION: Which constellation is NGC 339 in?

PROBLEM: Context : Desert Combat (DC) is a mod for the first-person shooter (FPS) computer game Battlefield 1942, created by Trauma Studios. 
Subject : Desert Combat 
Relation : based on

SOLUTION: Which is the basis of Desert Combat?

PROBLEM: Context : The action in Gray Lensman picks up immediately where Galactic Patrol left off, in the middle of the battle to destroy Helmuth's Main Base and, it is hoped, fully end the threat of Boskone. 
Subject : Gray Lensman 
Relation : series

SOLUTION:
What series is Gray Lensman a part of?

