Hina went to school cheerfully today as well.

Hinatsu is my best friend.

He enjoys playing games with his friends every weekend.

In the old days, people used whale oil as fuel for lamps.

The technique of bow creation played an important role in Japanese history.

Carbon is one of the basic elements of life.

Carbon dioxide is one of the main causes of global warming.

He was infected with anthrax.

The government is considering the introduction of a carbon tax.

My paternal grandmother is a very kind person.