Which sentence contains a restrictive clause?

My grandfather told me that his mother always thought he would become an actor when he grew up.
The students that were included on the list were supposed to arrive at school one half hour early for photographs.
The dog was born on the farm; this was the reason he was never quite satisfied with city life.
At the park, which is right around the corner from the grocery store, there will be a free concert next Saturday night.

The students that were included on the list were supposed to arrive at school one half hour early for photographs.