He got a four of a kind in poker.

He bought a new leather jacket.

The United Nations Environment Programme is providing solutions to global environmental problems.

He prostrated before the king to show respect.

This mutetrahedron plays a very important role in the world of mathematics.

We are implementing a social distancing strategy to prevent the spread of the new coronavirus.

I was born and raised in Kakamigahara City.

This is a model of a mutetrahedron.

This mutetrahedron has a very unusual shape.

Three countries formed an alliance.