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]: hair straightening is when a person makes their hair straighter.
[EX A]: hair straightening

[EX Q]: jan mølby is a former football player.
[EX A]: jan mølby

[EX Q]: the canton of bellerive-sur-allier is an administrative division of the allier department in central france.
[EX A]:
canton of bellerive-sur-allier