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

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

What relation is your brother's grandfather's wife's grandson to you ?

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

What relation is your grandmother's grandson's brother's brother in law to you ?

What relation is your cousin's sister's aunt's niece's father in law's brother to you ?