This library is a closed stack, so you need the help of staff to find books.

He went to the archives to find important information.

He achieved the Big Three Dragons in mahjong.

Primitive communism is one of the initial forms of human social organization.

The place of origin of this wine is France.

She uses a diaeresis in her name.

He is an expert in dialectology, studying dialects from all over Japan.

Oxygen, which is one of the chemical elements, is necessary for us to breathe.

The former is my friend, and the latter is my colleague.

My brother is a famous biologist.