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]: hiragana are part of the japanese writing system.
[EX A]: hiragana

[EX Q]: dorothea sally eilers (or just sally eilers; december 11, 1908 – january 5, 1978) was an american actress.
[EX A]: sally eilers

[EX Q]: montigny-le-franc is a commune.
[EX A]:
montigny-le-franc