The Tertiary period was a very important time in the history of the Earth.

I like listening to Beethoven's Ninth.

He is good at playing Beethoven's Ninth.

This is my fourth attempt.

This is my second attempt.

It is thirty-three kilometers to my house.

New World monkeys live in South America.

The World Health Organization is working to improve public health worldwide.

The World Trade Organization is an important organization that sets the rules for international trade.

She is conducting research on the world's oldest profession.