$A + B$ means $A$ is the father of $B$; $A - B$ means $A$ is the wife of $B$; $A \times B$ means $A$ is the brother of $B$; $A \div B$ means $A$ is the daughter of $B$.
If $P - R \times Q$,which of the following is true?

Pointing to a man,a woman said,"His mother is the only daughter of my mother." How is the woman related to the man?

Pointing to a lady on the platform,Anju said,'She is the sister of the father of my mother's son'. Who is the lady to Anju?

There is a family of six persons $A, B, C, D, E,$ and $F$. They are Lawyer,Doctor,Teacher,Salesman,Engineer,and Accountant. There are two married couples in the family. $D$,the Salesman,is married to the Lady Teacher. The Doctor is married to the Lawyer. $F$,the Accountant,is the son of $B$ and brother of $E$. $C$,the Lawyer,is the daughter-in-law of $A$. $E$ is the unmarried Engineer. $A$ is the grandmother of $F$. What is the profession of $B$?

$P$ is the brother of $Q$. $M$ is the sister of $Q$. $T$ is the brother of $P$. How is $Q$ related to $T$?

Pointing to an old man,Kailash said,"His son is my son's uncle." How is the old man related to Kailash?