Your brother's aunt's sister's mother's daughter is your which relation ?

Your

Brother's

Aunt's

Sister's

Mother's

Daughter

is your SISTER !!

What relation is your brother's mother's father's wife to you ?

What relation is your sister's uncle's son's aunt's brother in law to you ?

What relation is your sister's brother's aunt's mother to you ?

What relation is your son's uncle's aunt's niece to you ?

What relation is your aunt's niece's mother's father to you ?

What relation is your aunt's nephew's sister's brother's grandmother to you ?