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The Pola flotilla was an Imperial German Navy ( IGN ) formation set up to prosecute the U-boat campaign against Allied shipping in the Mediterranean during the First World War in support of Germany ’s ally , the Austro-Hungarian Empire .
 location: Pola; organization: Imperial German Navy; location: Germany; location: Austro-Hungarian Empire
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: Pola, Imperial German Navy, Germany, Austro-Hungarian Empire 
Answer:
 location: Pola; organization: Imperial German Navy; location: Germany; location: Austro-Hungarian Empire