In a certain code language,'A + B' means 'A is the husband of B''A - B' means 'A is the sister of B''A x B' means 'A is the father of B''A $÷$ B' means 'A is the mother of B'Based on the above, how is P related to Z if '$\text{W}+\text{Y}-\text{Z}÷\text{X}+\text{P}$ '?

Let's trace the relationships from the expression $\text{W}+\text{Y}-\text{Z}÷\text{X}+\text{P}$:$\text{W + Y}⟹\text{W is the husband of Y}$ ($\text{Y}$ is female).$\text{Y - Z}⟹\text{Y is the sister of Z}$ ($\text{Z}$ is female because of next step).$\text{Z }÷\text{ X}⟹\text{Z is the mother of X}$.$\text{X + P}⟹\text{X is the husband of P}$ ($\text{P}$ is female).Now let's determine the relation of P with respect to Z:Z is the mother of X.X is married to P (P is X's wife).Therefore, P is the son's wife (daughter-in-law) of Z.