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The Tour de Crest ( Crest Tower ) is the imposing vestige of a castle - the Château de Crest - in the commune of Crest in the Drôme département of France , one of the highest keep s in Europe , if not the highest ( 52 metres/171 feet ) .
 location: Drôme
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: Drôme 
Answer:
 location: Drôme