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After the completion of the Sanshui-Maoming Railway in 1991 , the Hemao Line became a connecting section between the Litang-Zhanjiang and Guangzhou-Maoming Railway s. Together , the three railways form part of China 's southern coastal railway corridor .
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Given options, please tell me the categories of all the listed entity words.Output format is "type1: word1; type2: word2". 
Option: location, person, organization 
Text: {0} 
 Entities:  
Answer:
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