the dog / the boys
Boys' dog.
the eyes / the cat
Cat's eyes.
the ball / the girls
The girls' ball.
the names / your friends
Your friends' names
the cousin/ boys
Boys' cousins.
the finger/ James
James' finger
the toys / the children
Children's toys.
the camera / Tom
Tom's camera.
the aunt / Jane
Jane's aunt.
the uncle / Bill
Bill's uncle.
the car / Mike
Mike's car.
the daughter / Mr Smith
Mr Smith's daughter.