Mary's cat is a Maine Coon. It likes sitting on her lap.
Mary's cat, which likes to sit on her lap, is a Maine Coon.
Jim is in the kitchen. He is talking on the phone.
Jim, who is in the kitchen, is talking on the phone.
The church is very old. We visited it yesterday.
The church which we visited yesterday is very old.
They are thinking about developing a wind farm in the town. My grandmother lives there.
They are thinking about developing a wind farm in the town where my grandmother lives.
I met a boy. His father has been to space.
I met a boy whose father has been to space.
The power plant opens next month. It will employ 1,000 people.
The power plant, which will employ 1,000 people, opens next month.
We look after stray dogs. Their owners can't be traced.
We look after stray dogs whose owners can't be traced.
The picture has mountains. I painted it. (**I painted this picture specifically, not the others)
The picture which has mountains was painted by me.
I’ve been to Carancas in Peru. A meteorite landed there in 2007.
I’ve been to Carancas in Peru, where a meteorite landed in 2007.
I live in a village called South Milton. It has a population of 600.
I live in a village called South Milton, which has a population of 600.
Tim has short blonde hair. He is very good at sports.
Tim, who has short blond hair, is very good at sports.
My friend Jade opposes GM crops. She’s an environmental scientist.
My friend Jade, who is an environmental scientist, opposes GM crops.
Here's the money. I owe it to you.
Here's the money (that/which) I owe you.
I run three times a week. It keeps me healthy.
I run three times a week, which keeps me healthy.