$X$ introduces $Y$ saying,"He is the husband of the granddaughter of the father of my father." How is $Y$ related to $X$?

Pointing to a person,a man said to a woman,"His mother is the only daughter of your father." How was the woman related to the person?

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

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

$A + B$ means $A$ is the son 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 mother of $B$; and $A = B$ means $A$ is the sister of $B$.
What does $P \times R \div Q$ mean?

$A + B$ 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 $P + R \div Q$,which of the following is true?