Your sister's brother's aunt's brother+in+law's daughter is your which relation ?

Your

Sister's

Brother's

Aunt's

Brother in law's

Daughter

is your COUSIN !!

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

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

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

What relation is your aunt's nephew's sister's daughter in law to you ?

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

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