Are these your _______s?
Yes. they are. They are my cars/No, they aren't. They are Kimi's/Kin's cars.
Are these your _______s?
Yes. they are. They are my tops/No, they aren't. They are Kimi's/Kin's tops.
Are these your _______s?
Yes. they are. They are my puzzles/No, they aren't. They are Kimi's/Kin's puzzles.