9996
He also announced his support for then-President Aleksander Kwaśniewski , as well as future Prime Minister Leszek Miller .
 Aleksander Kwaśniewski, Leszek Miller
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Aleksander Kwaśniewski, Leszek Miller