Who is he?
He's the brother.
Who's she?
She's the sister.
How many brothers do you have?
I have two brothers.
Who is he?
He's the father.
Who is he?
He's the grandfather.
Who is she?
She's the mother.
How many fathers do you have?
I have one father.
Who are they?
They're parents.
Who is she?
She's the grandmother.
How many mothers do you have?
I have one mother.
How many sisters do you have?
I don't have any sisters.