A2
the things that belong or relate to a group of people, animals, or things that have already been talked about
Dictionary examples:
The dogs ate our homework. The teacher won't believe it's theirs! (0.0)
The robots cleaned our house. The dirt is now theirs! (0.0)
The cats stole our fish. Now it's theirs! (0.0)
I think she's a relation of theirs. (24.0)