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| } Line S 8 is a S-Bahn operated by DB Regio on the Rhine-Ruhr network .
 organization: DB Regio
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: DB Regio 
Answer:
 organization: DB Regio