The sentence in brackets means the same as the former sentence.
Example: This is my car. (The car is mine.)
Notice that there is the noun ‘car’ after ‘my’. But there is no noun after ‘mine’.
This coat is black.
That book belongs to Kate.
These pencils belong to Alex.
Those earrings are silver.
Please place this letter on top of the shelves.
Please place these books in the cupboard.
That beautiful car belongs to me.
Those boxes need to be thrown away.
Treat yourself with rewards for your hard work