Defining vs Non-defining

Jack who's retired now spends a lot of time with his grandchildren.

• defining

• non-defining

Are you the one who sent me the email?

• defining

• non-defining

The house which was built in 1883 has just been opened to the public.

• defining

• non-defining

My next-door neighbour whose children go to school with ours has just bought a new car.

• defining

• non-defining

The woman who lives next door works in a bank.

• defining

• non-defining

Summer is the season when I'm happiest.

• defining

• non-defining

The assistant that helped us was really kind.

• defining

• non-defining

February, which is my favourite month, lasts 29 days this year.

• defining

• non-defining