Instructions: Generate a correct and concise answer for the question based on the words in the context.
Input: Context : The Race to Urga is a musical theatre play, started in 1968 as an adaptation of the Bertolt Brecht play The Exception and the Rule, with the project soon renamed to A Pray by Blecht.
Question : Which is the basis of The Race to Urga?
Output:
The Exception and the Rule