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.

Context : PyGTK is a set of Python wrappers for the GTK+ graphical user interface library. 
Subject : PyGTK 
Relation : based on
The PyGTK is based upon what?

Context : Irina Kostyuchenkova (Russian: Ирина Костюченкова; born May 11, 1961), is a retired female javelin thrower who represented the Soviet Union and later Ukraine. 
Subject : Irina Kostyuchenkova 
Relation : sex or gender
What is the sex of Irina Kostyuchenkova?

Context : Born in New York, Whitney Straight was the son of Major Willard Dickerman Straight and heiress Dorothy Payne Whitney. 
Subject : Whitney Straight 
Relation : military branch

In what military branch did Whitney Straight serve?