He was imprisoned as a political prisoner for political reasons.

I often enjoy sailing on weekends.

We plan to sail on a yacht this weekend.

He opened the window to let fresh air into the room.

I mailed a letter to him.

The feature of this building is its symmetrical design.

Freedom of thought is one of the basic human rights.

He is known as the suzerain of this region.

We like to watch satellite broadcasting at home.

We hired the best guide for this trip.