Keitei is my hometown.

The summer wisteria in the garden alleviates the heat of summer.

The garden of my house is very beautiful.

There is a small garden at my house.

There is a small garden at my house.

The air in this room is fresh.

What will you use this empty box for?

Looking at the bird flying high in the sky, I felt freedom.

The altitude of this airplane is 10,000 meters.

In mathematics, an empty set refers to a set that does not contain any elements.