He got a four of a kind in poker.

This painting is a masterpiece from the Renaissance era.

He said, 'It's difficult to make a life,' explaining the phrase 'When a man steps over the threshold, he has seven enemies.'

He said, 'Man shall not live by bread alone,' teaching me that spiritual satisfaction is also important.

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.

Three countries formed an alliance.

This mutetrahedron has a very unusual shape.

This is a model of a mutetrahedron.