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

What relation is your sister's grandmother's grandson's grandfather to you ?

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

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

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

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