24593
For example , the Banach–Tarski paradox is neither provable nor disprovable from ZF alone : it is impossible to construct the required decomposition of the unit ball in ZF , but also impossible to prove there is no such decomposition .
 Banach–Tarski
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Banach–Tarski