Generate a correct and concise answer for the question based on the words in the context.

Ex Input:
Context : OPML (Outline Processor Markup Language) is an XML format for outlines (defined as ``a tree, where each node contains a set of named attributes with string values''). 
Question : Which is the basis of OPML?

Ex Output:
XML


Ex Input:
Context : Sunil Shroff is a urologist and transplant surgeon from India. 
Question : What was Sunil Shroff's occupation?

Ex Output:
urologist


Ex Input:
Context : Les Trois Mousquetaires (The Three Musketeers) is a 1921 French silent short film adventure directed by Henri Diamant-Berger based on novel by Alexandre Dumas, père. 
Question : Which is the basis of Les Trois Mousquetaires?

Ex Output:

The Three Musketeers