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For several centuries , the people of San Pedro de Atacama in Chile have been drinking water that is contaminated with arsenic , and some evidence suggests they have developed some immunity .
 location: San Pedro de Atacama; location: Chile
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: San Pedro de Atacama, Chile 
Answer:
 location: San Pedro de Atacama; location: Chile