I saw a gray-haired old man playing with his grandson in the park.

I saw a bald eagle in the park.

He has a deep interest in natural history.

The bald eagle is a symbolic bird of North America.

I want to go see Mount Baekdu.

Anemone is a beautiful flower that announces the arrival of spring.

The tundra swan lives in cold regions.

I saw a whooper swan in the park.

We are planning to go to the science museum tomorrow.

We are planning to go to the science museum this weekend.