Based on the given code language, B is the brother's wife (or sister-in-law) of O.
Let's break down the coded expression 'B × R + A ~ V ? O' step by step from left to right:
B × R → B is the wife of R. (This implies R is a male and B is his female partner).
R + A → R is the brother of A. (Therefore, B is A's brother's wife).
A ~ V → A is the daughter of V. (Since R is A's brother, both R and A are children of V).
V ? O → V is the father of O. (This means R, A, and O are all siblings sharing the same father, V).
Conclusion
R, A, and O are all brothers and sisters (siblings).
R is a male sibling in this family.
B is married to R.
Thus, in relation to O, B is O's brother's wife (sister-in-law).