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The Kurdistan Democratic Party ( KDP ) said the Patriotic Union of Kurdistan ( PUK ) had broken the U.S.-brokered ceasefire agreed between the two parties last week .
 Patriotic Union of Kurdistan, KDP, Kurdistan Democratic Party, U.S.-brokered, PUK
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, else, organization, person 
Text: {0} 
Answer:
 Patriotic Union of Kurdistan, KDP, Kurdistan Democratic Party, U.S.-brokered, PUK