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John Calvin Ferguson became an expert on Chinese art , and the owner and publisher of two Shanghai newspapers , Sin Wan Pao and The Shanghai Times , while his career extended into the area of Chinese government service .
 Ferguson, Shanghai, Shanghai
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Ferguson, Shanghai, Shanghai