Interesting quiz. If it was just more consistent about city names vs. airport names it would be pretty good. Also, I'll have to look at that list on Wikipedia because some of these were kind of surprising.
Couldn't find this exact list on Wikipedia. Is it possible that these airports are actually ranked by number of international passengers? That would make a lot more sense.
Malpensa is the main airport of MILAN, Suvarnabhumi of BANGKOK and Narita of TOKYO.