Opladen station
It is also served every 30 minutes between 5am to 8pm by Regionalbahn RB 48 "Rhein-Wupper-Bahn" , stopping at all stations between Wuppertal-Oberbarmen and Cologne , continuing every hour to Bonn-Mehlem . 
<triplet> Rhein-Wupper-Bahn <subj> Bonn-Mehlem <obj> terminus location