Syonan is a part of Japanese history.

This math problem is really a difficult problem.

This math problem is too obscure, I can't understand it.

This math problem is very dense.

What is this, that box?

Learning about the culture of Southeast Asia is very interesting.

My house is located in the southeast of the city.

He accidentally ate the poison apple.

Spring has come, and the melting of snow has begun.

If you get stung by that bee's venomous stinger, you should go to the hospital immediately.