In a certain code language,
A+B means 'A is the mother of B'
A−B means 'A is the brother of B'
A×B means 'A is the wife of B'
A#B means 'A is the father of B'

Based on the above, how is W related to P if 'W−V+T#R×S−P'?

Let's decode the expression 'W−V+T#R×S−P' step-by-step from left to right:
W−V⟹ W is the brother of V. (W is Male)

V+T⟹ V is the mother of T. (V is Female)

T#R⟹ T is the father of R. (T is Male)

R×S⟹ R is the wife of S. (R is Female, S is Male)

S−P⟹ S is the brother of P. (S is Male)

Now let's trace the relationship from P to W:

S is the brother of P.

R is the wife of S ⟹ R is P's brother's wife.

T is the father of R ⟹ T is P's brother's wife's father.

V is the mother of T ⟹ V is P's brother's wife's father's mother.

W is the brother of V ⟹ W is P's brother's wife's father's mother's brother.

Hence, W is the brother's wife's father's mother's brother of P.