Pointing to a photograph,a man tells his friend,'She is the daughter of the only son of my father's wife'. How is the girl in the photograph related to the man?

$P \times Q$ means $P$ is the sister of $Q$; $P + Q$ means $P$ is the father of $Q$; $P - Q$ means $P$ is the mother of $Q$. Which of the following means $S$ is the aunt of $T$?

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 $F$. How is $D$ related to $F$?

$A$ family consists of six members $P, Q, R, X, Y,$ and $Z$. $Q$ is the son of $R$ but $R$ is not the mother of $Q$. $P$ and $R$ are a married couple. $Y$ is the brother of $R$. $X$ is the daughter of $P$. $Z$ is the brother of $P$.
How many children does $P$ have?

Pointing to a man in a photograph,a woman said,'His brother's father is the only son of my grandfather'. How is the woman related to the man in the photograph?

$A$ girl introduced a boy as the son of the daughter of the father of her uncle. The boy is the girl's: