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Line S 3 mainly runs over three lines built or acquired by the Bergisch-Märkische Railway Company : Its last 1.2 km to Hattingen Mitte runs over the Wuppertal-Wichlinghausen – Hattingen railway opened by the Prussian state railways in 1884 and a short section of line opened by Deutsche Bundesbahn in 1987 , including a 100 metre long tunnel .
 Bergisch-Märkische Railway Company, Deutsche Bundesbahn
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
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Answer:
 Bergisch-Märkische Railway Company, Deutsche Bundesbahn