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Long-tail boats operate on fifteen regular routes on the Chao Phraya , and passenger ferries at thirty-two river crossings served an average of 136,927 daily passengers in 2010 .
 Chao Phraya
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Chao Phraya