I knew gothenburg because of gutenberg... ;) ( I allways get unsure how to spell either of them, because a mix of them show up in my head..)(goten guten gothen guthen, berg, borg, burg etc)
I knew of Umea because of Ye Banished Privateers, I went to Stockholm for the second Swedish Pirate Armada (Ye Banished Privateers, Stormfrun, Pat Razket) and at least 2 of those bands already played in Visby at the medieval week.
I thought I had only remembered half, but guess with so few, was able to make best guess.