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

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

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

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

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

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