My brother is a graduate student at the University of Tokyo.

He is a world-renowned researcher.

My laboratory is on the third floor of the university.

He is known as an excellent researcher.

I am a member of that research association.

We are focusing on the research and development of new products.

I conducted a research project as a summer vacation homework.

Wealthy people often dine at high-end restaurants.

The living standard of the middle class is positioned between the poor and the wealthy.

This product is popular among the age group of people in their 20s to 30s.