Tokyo is the city with the highest population density in Japan.

The artificial satellite is orbiting around the earth.

I commute to work every day using public transportation.

The study of artificial life is a new frontier in science.

Higher fatty acids play an important role in our health.

This food is rich in higher fatty acids.

This area is affected by radioactive fallout from past nuclear tests.

He was moved by the view from the top of the skyscraper.

My grandfather was a teacher at a national elementary school.

My friend goes to a Korean school.