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The Comoros ' largest cities were the capital , Moroni , with about 30,000 people , and the port city of Mutsamudu , on the island of Nzwani , with about 20,000 people .
 Comoros, Moroni, Mutsamudu, Nzwani
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Comoros, Moroni, Mutsamudu, Nzwani