write a program in Haskell for querying and updating population figures
for a list of major European cities. Each city has a name, a location expressed in degrees
north and degrees east, and a list of metropolitan area population figures expressed in
thousands of inhabitants: the first value in the list is the current population, the second
is the population a year ago, the third is the population two years ago, etc. The list of cities
is kept in alphabetical order. You can assume that the population lists have a common length
of at least two.