He is trying to understand the concept of Trinity in Christianity.

In Christianity, God is considered as the Trinity of the Father, the Son, and the Holy Spirit.

Three days ago, I went to Tokyo.

This mutetrahedron has a very unusual shape.

This is a model of a great icosahemidodecahedron.

This regular dodecahedron is a geometric shape with perfect symmetry.

This solid is called a regular icosahedron, and it is made up of 20 equilateral triangles.

Him calling me lazy is truly a case of the pot calling the kettle black.

He chose a stable job, saying 'a bird in the hand is worth two in the bush.'

Ogura Hyakunin Isshu is one of the classical literatures of Japan.