This mutetrahedron has a very unusual shape.

This is a model of a mutetrahedron.

There were many people gathering, and the park was bustling.

This contract includes provisions regarding the use of characters.

He was exposed to radiation in a nuclear accident.

He is learning Hebrew.

Jiraiya is my favorite character.

The number of visitors to the park today is higher than yesterday.

The United Nations Security Council plays a crucial role in maintaining world peace and security.

The National Security Council was convened to make important policy decisions.