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 : The Panzerfaust 3 (Tank fist 3 or ''The German RPG'') is a modern disposable recoilless anti-tank weapon, which was developed between 1978 and 1985 and put into service by the Bundeswehr in 1992.
Subject : Panzerfaust 3
Relation : service entry
[A]: What year did Panzerfaust 3 come into use?

[Q]: Context : The Logical Language Group (LLG) began developing Lojban in 1987.
Subject : Lojban
Relation : based on
[A]: Which is the basis of Lojban?

[Q]: Context : Chi Cygni ( Cyg, Cygni) is a variable star of the Mira type in the constellation Cygnus.
Subject : Chi Cygni
Relation : constellation
[A]:
The star Chi Cygni is a part of the constellation named what?