Tell me which of these is a Country, a City, a River, or a Mountain: New York, Nile, Amazon, Kilimanjaro, USA, Spain, Italy, Rome, Prague, Zurich, France, San Francisco, K2, Buenos Aires, Brazil, Mount Everest, London, Mekong

New York - City
Nile - River
Amazon - River
Kilimanjaro - Mountain
USA - Country
Spain - Country
Italy - Country
Rome - City
Prague - City
Zurich - City
France - Country
San Francisco - City
K2 - Mountain
Buenos Aires - City
Brazil - Country
Mount Everest - Mountain
London - City
Mekong - River