Generate a question which can yield the answer mentioned in the input. Generated question must be answered by the answer provided in input, without using any extra knowledge.

Q: Context : Erie Commodores FC is an American professional soccer team based in Erie, Pennsylvania which competes in the National Premier Soccer League (NPSL), a nationwide amateur league at the fourth tier of the American Soccer Pyramid. 
Answer : National Premier Soccer League

A: What league was Erie Commodores FC?
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Q: Context : Il Contratto (also known as 'The Contract') is a 1953 Australian film from Giorgio Mangiamele and Italian migrants in Australia. 
Answer : Giorgio Mangiamele

A: Who was Il Contratto was directed by?
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Q: Context : The DCE Distributed File System (DCE/DFS) is the remote file access protocol used with the Distributed Computing Environment. 
Answer : Distributed Computing Environment

A:
Which is the basis of DCE Distributed File System?
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