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.

[Q]: the karlal (urdu کرڑال also known as kard'al, karaal, karhral, or kiraal) is a hindko speaking tribe in khyber-pakhtunkhwa, pakistan.
[A]: karlal


[Q]: a rearguard is a part of a military force that protects the main force from attack from the rear.
[A]: rearguard


[Q]: barbara cook (october 25, 1927 – august 8, 2017) was an american singer and actress.
[A]:
barbara cook