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The earliest signs of use are associated with Olmec sites ( within what would become Mexico ’s post-colonial territory ) suggesting consumption of chocolate beverages , dating from 19 centuries BCE .
 location: Olmec; location: Mexico
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: Olmec, Mexico 
Answer:
 location: Olmec; location: Mexico