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His mother , Sanghiemkham , was one of Prince Bounkhong daughters , married Souvannarath , would late become Prime Minister , making Prince Souvanna Phouma , Prince Souphanouvong , Prince Phetsarath and Prince Kindavong his step uncles .
 Bounkhong, Souvannarath, Souvanna Phouma, Souphanouvong, Phetsarath
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Bounkhong, Souvannarath, Souvanna Phouma, Souphanouvong, Phetsarath