Your sister's aunt's niece's daughter is your which relation ?

Your

Sister's

Aunt's

Niece's

Daughter

is your NIECE !!

What relation is your cousin's sister's brother's daughter to you ?

What relation is your son's uncle's sister's grandfather to you ?

What relation is your uncle's cousin's son's brother to you ?

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

What relation is your father's sister's niece's brother to you ?

What relation is your brother's sister's father's son to you ?