7920
This has resulted in unexpectedly high demand for new commuter trips between the three cities and a corresponding increase in suburban rail passengers accessing the high-speed services at the main city-centre stations ( or Hauptbahnhof ) .
 location: Hauptbahnhof
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: Hauptbahnhof 
Answer:
 location: Hauptbahnhof