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 : China Airlines Flight 642 was a flight that crashed at Hong Kong International Airport on 22 August 1999. 
Subject : China Airlines Flight 642 
Relation : point in time

SOLUTION: The date of China Airlines Flight 642 was what?

PROBLEM: Context : Columbus Nova is an investment company founded in 2000 and centered in New York City. 
Subject : Columbus Nova 
Relation : parent company

SOLUTION: Which company is the parent company of Columbus Nova?

PROBLEM: Context : Aarne Arvonen was born in Helsinki and was the last surviving veteran of the Finnish Civil War of 1918 having served for the Red Guard. 
Subject : Aarne Arvonen 
Relation : conflict

SOLUTION:
What was the war that Aarne Arvonen fought in?