Please add Oslo to your list of hints.
And frankly, Kano isn't a great "world city" for a quiz like this. The Nigerian city not a national capital or an international landmark, and its population is well under 4M. If you only chose it because you could come up with other hint-cities for it, you might be better omitting the 4-letter city and adding a 7-letter city instead.
(Alternately, switch it to Lima, a much more recognizable world city. Cities that are clues to Lima: Linz, Lyon, Nice, Kiev, Rome, and Agra, among surely others.) |