He is studying the history of the Balkan region.

A baryon is a type of fundamental particle in physics.

I practice hitting the punching bag at the gym every day.

I have visited Buckingham Palace.

The adventure stories of Sinbad are very popular among children.

I was on standby all night for the exam.

His collision is very powerful.

His car collided with a cat that suddenly crossed the road.

He practices batting every day.

He started a movement against violence.