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The Athabasca Oil Sands contain the largest proven reserves of oil in the world outside Tar sands .
 location: Athabasca Oil Sands; location: Tar
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: Athabasca Oil Sands, Tar 
Answer:
 location: Athabasca Oil Sands; location: Tar