Siberia is a vast region of Russia.

In my area, a summer festival is held every year.

This huge park is bustling with people every day.

Looking at this vast sea, I feel small.

Hiroshi is my best friend.

The Siberian tiger is an incredibly powerful animal, and its strength and speed are astonishing.

I have been to Russia.

He can speak Russian fluently.

He has many Russian friends.

This boundless universe is beyond our imagination.