He is overseeing the project.

This problem is too simple.

This book has up to three volumes.

Mr. Kayamoto went to the festival.

He caught a cold and was coughing, making a 'gohogoho' sound.

He was deeply impressed by the teachings of Maha Sattva.

I have been to El Salvador.

The great majority of people are in favor of this plan.

He is an amazing polyglot who can speak five languages fluently.

Polyarchy refers to a political system where many people share power.