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The Indragiri River is a river in Sumatra , in the Indonesia n province of Riau .
 location: Indonesia; location: Riau
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: Indonesia, Riau 
Answer:
 location: Indonesia; location: Riau