Kievan Rus was a medieval East Slavic state.

I saw a flamingo in the park.

He is a master of kung fu.

He started writing a song on the staff notation.

He was punished for his disobedience to the rules.

He was peering into the camera's viewfinder, aiming for the perfect shot.

My favorite breakfast is a chocolate chip muffin.

Hitori is my best friend.

He is as strong as an ox.

It is important to learn about the prevention and treatment of the human immunodeficiency virus.