We should always remember the power of Kannon in difficult times.

He said, 'Where there is a will, there is a way,' and faced the difficult situation.

He strongly believes in the philosophical thought, 'I think, therefore I am.'

Masato is my best friend.

A tautology refers to a logical formula that is always true, no matter what values are substituted.

The sphericity of this object is very high.

He went to America as an international student.

That high school girl studies in the library every day.

He is working at a school as a student teacher.

The Phanerozoic eon is the most recent eon in the history of the Earth.