The writer wrote the article. He won the Nobel Prize.
The writer who wrote the article won the Nobel Prize. / The writer who won the Nobel Prize wrote the article.
My friend and I saw a movie last night. It made us both cry.
My friend and I saw a movie last night that/which made us both cry.
He didn't wait at the traffic lights. They were red.
He didn't wait at the traffic lights, which were red.
The money is in the kitchen. The money belongs to John.
The money that / which belongs to John is in the kitchen.
A lion is an animal. Lions are very strong.
A lion is an animal which is very strong.
The people were watching the movie. They were very frightened.
The people who were watching the movie were very frightened.
A police officer's car was parked at the next corner. He stopped and arrested them.
A police officer, whose car was parked at the next corner, stopped and arrested them.
Sergey is a friend. I can trust him.
Sergey is a friend who/that I can trust.
We had fish and chips. I always enjoy them.
We had fish and chips, which I always enjoy.
We broke the laptop. The laptop belonged to my father.
We broke the laptop that / which belonged to my father.
I have a really good friend. She works in an important company.
I have a really good friend who works in an important company.
He drank the juice. He made the juice.
He drank the juice which he (had) made.
Marie Curie was a scientist. She discovered radium.
Marie Curie was the scientist who discovered radium.
A detective is a person. Detectives discover the truth about crimes.
A detective is someone / a person who discovers the truth about crimes.
(I have only one brother) I sent an email to my brother. My brother lives in Australia.
I sent an email to my brother, who lives in Australia.
She worked for a man. The man used to be an athlete.
She worked for a man who used to be an athlete.
This is George. You met him at our house last year.
This is George, whom you met at our house last year.
Edvard Munch is the artist. He painted "The Scream" in 1893.
Edvard Munch is the artist who painted "The Scream" in 1893.
The bag contained the money. It was yellow.
The bag that/which contained the money was yellow.
The woman drove the car. She was nervous.
The woman who drove the car was nervous.
"Las Meninas" is considered one of the best paintings of all time. It was painted by Diego Velazquez in 1656.
"Las Meninas", which is considered one of the best paintings of all times, was painted by Diego Velazquez in 1656.
They live in a city. The city is in the North of England.
They live in a city that is in the North of England.
The man is in the hall. The man is wearing a blue jumper.
The man who is wearing a blue jumper is in the hall.