Does she have a sister?
No, she doesn't
Does he have a sister?
Yes, he does.
Does he have a grandpa?
Yes, he does.
Does he have a grandma?
Yes, he does.
Who is he?
He's father.
Who's my mother's sister?
She's my aunt.
Who's my dad's brother?
He's my uncle.
Who is my uncle's son or daughter?
She's/He's my cousin.
