Contraction or Possession
It´s famous for its architecture.
CORRECT.
He is Gersons´ father.
Incorrect : Gerson´s
What is this an example of?It´s a great game.
Contraction - It is
Bart is Homers son.
INCORRECT: Homer´s
What is this an example of? They´re brothers.
Contraction -They are
Toms shoes and Dianas shoes are matching.
Tom's & Diana's
The children´s toys are in the kitchen.
CORRECT.