context: When I lived in Spain, my friends and I decided to go to Madrid for a weekend. We knew that Madrid had a very good and easy subway system, but none of us had ever taken it before so we were a little bit nervous. We got off the bus and quickly found a subway map so we could get to our hotel. After looking at the map for awhile, we decided we needed to take two different trains to get to where we needed to go. We got on our first train and everything went smoothly. However, after we got on our second train, we quickly realized we were headed in the wrong direction! We got off  at the next stop and switched to the other side of the subway station so we could get to our hotel. We finally made it to our hotel and laughed about taking the wrong train by accident.
question: Who is taking the train?
reference: Tourists.
candidate: The person telling the story.