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He achieved critical and popular success with his first novel " The Sheltering Sky " ( 1949 ) , set in what was known as French North Africa , which he had visited in 1931 .
 French North Africa
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 French North Africa