Detailed Instructions: In this task, you are given a country name and you need to return the Top Level Domain (TLD) of the given country. The TLD is the part that follows immediately after the "dot" symbol in a website's address. The output, TLD is represented by a ".", followed by the domain.
See one example below:
Problem: Andorra
Solution: .ad
Explanation: .ad is the TLD of the country called Andorra.

Problem: Costa Rica
Solution:
.cr