This is a computer. It can receive TV. This is a computer which can receive TV. The river is beatiful. It runs through this city. The river which runs through this city is beautiful. The boy is Tom. He got the first prize. The boy who got the first prize is Tom. I have a friend. She lives in Korea. I have a friend who lives in Korea. He is driving a car. It was made in America. He is driving a car which was made in America. I saw a cat. It has gold eyes. I saw a cat which has gold eyes. I know a woman. She can speak three languages. I know a woman who can speak three languages.