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The total proven reserves of the Viperești oil field are around 105 million barrels ( 13.9 × 106tonnes ) , and production will be centered around .
 location: Viperești
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: Viperești 
Answer:
 location: Viperești