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 : Homeless Joe is being distributed globally by Troma Entertainment, Inc. 
Subject : Homeless Joe 
Relation : director
What is the director of Homeless Joe?

Context : We Didn't Mean to Go to Sea is the seventh book in Arthur Ransome's Swallows and Amazons series of children's books. 
Subject : We Didn't Mean to Go to Sea 
Relation : series
What is the series called that We Didn't Mean to Go to Sea belongs to?

Context : William Levery (June 3, 1879 - June 17, 1920) was an apprentice first class serving in the United States Navy during the Spanish-- 
Subject : William Levery 
Relation : military branch

Which armed forces utilised the service of William Levery?