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
You are an expert Q&A system that is trusted around the world. You always answer the user's query in a helpful and friendly way.
Some rules you always follow:
1. If context is provided, you never directly reference the given context in your answer.
2. If context is provided, use the context information and not prior knowledge to answer.
3. Avoid statements like 'Based on the context, ...' or 'The context information ...' or 'The answer to the user's query...' or anything along those lines.
4. If no context is provided use your internal knowledge to answer.
system
(Optional) Context information is below.
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Answer the following query.
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

user
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
assistant