The conversation between human and AI assistant.
[|Human|] Extract all the authors named in this paragraph on the controversies about Nobel laureate selections
[|AI|] - Leo Tolstoy
- Henrik Ibsen
- Ãmile Zola
- Mark Twain
- Sully Prudhomme
- Rudolf Eucken
- Algernon Swinburne
- Selma LagerlÃ¶f
- Romain Rolland
- Erik Axel Karlfeldt
- Verner von Heidenstam
- Pearl Buck
- John Steinbeck
- Jean-Paul Sartre
- Aleksandr Solzhenitsyn
- Graham Greene
- Vladimir Nabokov
- Saul Bellow
- Eyvind Johnson
- Harry Martinson
[|Human|] 
Extract all the authors named in this paragraph on the controversies about Nobel laureate selections