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The Siemens-Schuckert R. VI was a bomber aircraft built in Germany during World War I. It was one of six aircraft based on the Siemens-Schuckert R.I that were originally intended to be identical , but which each developed in a different direction and were designated as different aircraft types by the German Inspectorate of Flying Troops ( the Idflieg ) .
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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:  
Answer:
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