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

What relation is your cousin's uncle's daughter's brother in law to you ?

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

What relation is your mother's daughter's father's son's cousin's sister to you ?

What relation is your son's mother's daughter's father to you ?

What relation is your aunt's niece's father in law's daughter's grandfather to you ?