This painting is very valuable.

Masumi is my best friend.

The head of the police station explained the details of the incident to the press.

The harmonic series continues indefinitely, but its sum is not finite.

He believes that he is a psychic.

They all agreed to the plan in unison.

He played the role of an arbitrator.

He always has a long face, is there any problem?

We should respect all people.

This new jet can fly at supersonic speeds.