Looking at one person, a woman said, "His brother's father is the only son of my grandfather." How is the woman related to that person?

In a family, X and Y are sisters. Y is the mother of A. C is the son of A. B is the son of X. Which of die following statements is true? 

Pointing towards a girl Rama said that she is only child of my uncle’s father’s only sister’s daughter. Then how is Rama related to that girl?

Raj introducing a girl that she is the wife of my sister’s father’s only son then how is that girl related to the Raj?

B has only two children. A is the mother of B. C is married to the only daughter of B. C is the only child of F. C is the brother in law of G. H is married to G. J is the mother in law of H.

If P is the daughter of B then how P is related to A?

A is the father of B, C is the daughter of B, D is the brother of B, E is the son of A. What is the relationship between C and E? 

A is father of B and C. B is the son of A. but c is not the son of A. How is Created to A? 

X and Y are brothers. R is the father of Y. S is the brother of T and maternal uncle of X. What is the T to R?