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o-Xylene ( ortho-xylene ) is an aromatic hydrocarbon , based on benzene with two methyl substituent s bonded to adjacent carbon atoms in the aromatic ring ( the ortho configuration ) .
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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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