List all the countries of the mountains.
select country from mountain
Keep the ones that the mountain height is more than 4985.0.
select country from mountain where height > 4985.0
What about the height is more than 5600?
select country from mountain where height > 5600
Keep the country names where the mountain height is within the range of 5200 to 5600.
select country from mountain where height > 5600 intersect select country from mountain where height < 5200