He received the letter challenging him to a duel and began preparing for the duel.

I live in Japan.

I love Japan.

Ancient Japan was a place where beautiful nature and culture merged.

Gender roles are an important element in defining individual behavior in society.

His role is to fulfill his responsibilities as a leader.

It is important to understand the importance of health.

This is a historic building.

He is a famous historian and has written many history books.

He is majoring in history at university.