Is this her dog?
No, it isn't
Is this her umbrella?
No, it isn't
Is this her book?
Yes, it is
Are these their balloons?
Yes, they are
Is this his hat?
Yes, it is
Is this his umbrella
No, it isn't
Is this her cat?
Yes, it is
Is this his ball?
Yes, it is
Is this her hat?
No, it isn't
Is this his dog?
Yes, it is
Is this her book?
No, it isn't