Koutarou is my best friend.

What is the height of this building?

He is working hard for the development of Asia.

A new law was enacted for public safety.

We had meetings for hours to design a new product.

The next census will be conducted next year.

Demography is a part of social science that studies the structure, evolution, and problems of human population.

Looking at the population pyramid, you can see that this country is aging.

We played a match on the artificial turf soccer field.

This park was completely artificially made.