UNESCO is an international organization that promotes the development of education, science, and culture around the world.

He said, 'The advantages of heaven and earth are nothing compared to the harmony among people,' emphasizing the importance of teamwork.

He has wanted to become a superhero since he was a child.

This mutetrahedron has a very unusual shape.

This is a model of a mutetrahedron.

His heart became empty.

His heart felt like emptiness.

There is not a single cloud in the sky.