instruction:
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.
question:
Context : Fritz X was a nickname used both by Allied and Luftwaffe personnel. 
Subject : Fritz X 
Relation : service entry
answer:
What year did Fritz X come into use?


question:
Context : The Suomi KP/-31 (Suomi-konepistooli or ``Submachine-gun Finland'') was a submachine gun (SMG) of Finnish design used during World War II. It was a descendant of the M-22 prototype and the KP/-26 production model, which was revealed to the public in 1925. 
Subject : Suomi KP/-31 
Relation : service entry
answer:
What was the year that Suomi KP/-31 entered service?


question:
Context : Admiral John de Mestre Hutchison CVO CMG AdC (4 September 1862 -- 9 October 1932) was a Royal Navy officer who held senior posts during the early part of the 20th century. 
Subject : John de Mestre Hutchison 
Relation : military branch
answer:

What military branch is John de Mestre Hutchison?