166990
In March 2012 , the Mayor of Hangzhou stated that he expected it to open by the end of 2012 , in conjunction with the opening of the Hangzhou – Ningbo Passenger Railway and Hangzhou – Nanjing Passenger Railway .
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Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
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