The Japanese night heron was quietly targeting fish in the pond.

This old radio uses a pentode.

Pentathlon is a competition that tests both physical strength and technique.

He is always grumbling about trivial things, it's really annoying.

Learning about the history of the Five Guards is very important for understanding ancient Chinese society.

Mr. Gohyakujo is my best friend.

Fuji Five Lakes is a place where you can enjoy the beautiful nature of Japan.

He warned the young people, saying 'At thirty, one should not be careless, at forty, one should not be indecisive.'

I will turn twenty years old next year.

My class starts at eleven o'clock.