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

Your

Sister's

Uncle's

Daughter's

Brother in law

is your BROTHER IN LAW !!

What relation is your grandmother's grandson's father in law's cousin's daughter to you ?

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

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

What relation is your aunt's cousin's daughter's father in law to you ?

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

What relation is your cousin's uncle's daughter's wife to you ?