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In 391 BC , Celts " who had their homes beyond the Alps streamed through the passes in great strength and seized the territory that lay between the Apennine mountains and the Alps " according to Diodorus Siculus .
 location: Alps; location: Apennine; location: Alps; person: Diodorus Siculus
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: Alps, Apennine, Alps, Diodorus Siculus 
Answer:
 location: Alps; location: Apennine; location: Alps; person: Diodorus Siculus