Generate a topic word for the given sentence. A topic word is usually the name of a person, place, animal, concept or object the sentence is focusing on.

[EX Q]: morsain is a commune.
[EX A]: morsain

[EX Q]: pakistan super league (psl) is a professional twenty20 cricket tournament in pakistan.
[EX A]: pakistan super league

[EX Q]: badakhshan is a part of the northeast of afghanistan and the southeast of tajikistan.
[EX A]:
badakhshan