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.

[Q]: Context : Lojban has been shown to be translated in some of its parts into predicate logic. 
Subject : Lojban 
Relation : based on
[A]: The Lojban is based upon what?


[Q]: Context : In 1961, the first M79 grenade launchers were delivered to the US Army. 
Subject : M79 grenade launcher 
Relation : service entry
[A]: Which was the official year for the approval of M79 grenade launcher?


[Q]: Context : Switchin' Kitten is a Tom and Jerry animated short film, released on September 7, 1961. 
Subject : Switchin' Kitten 
Relation : series
[A]:
Which series was Switchin' Kitten in?