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: hiragana are part of the japanese writing system.

A: hiragana
****
Q: hair straightening is when a person makes their hair straighter.

A: hair straightening
****
Q: alsace (alsatian and german: "elsass", pre-1996 german: "elsaß") was an administrative region of france.

A:
alsace
****