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His wife was the Swedish writer Anne Charlotte Leffler , sister of the great mathematician Gösta Mittag-Leffler ( 1846 – 1927 ) .
 Swedish, Anne Charlotte Leffler, Gösta Mittag-Leffler
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Swedish, Anne Charlotte Leffler, Gösta Mittag-Leffler