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

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

What relation is your daughter's grandfather's sister's nephew's brother's uncle to you ?

What relation is your father's daughter's grandmother's grandson to you ?

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

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