Susan is the mom of Rachel.
Rachel's mom is Susan.
The dress of my sister is old.
My sister's dress is old
The mother of your sister is your mother.
Your sister's mother is your mother.
The hair of my cousin is blue.
My cousin's hair is blue.
The cellphone of John is in the classroom.
John's cellphone is in the classroom.
The father of your mother is your grandfather
Your mother's father is your grandfather.
The tail of the horse is not short.
The horse's tail is not short
The owner of the company is quite old.
The company's owner is quite old.
The favourite subject of Pam is English.
Pam's favourite subject is English.
The heart of Jerry is beating.
Jerry's heart is beating.