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What relation is your sister's father's daughter's grandfather to you ?

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

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

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

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

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