In a family, there are six members A, B, C, D, E and F. 

A and B are a married couple, A being the male member. D is the only son of C, who is the brother of A. E is the sister of D. B is the daughter-in-law of F, whose husband has died. How is E related to C ? 

Nikhil is father in law of Tara. Tara is the wife of Rahul. How is Rahul's brother related to Nikhil?

Pointing to a photograph of a lady, Vishal says, "She is the sister­in­law of my grandfather's daughter". How is the lady in the photograph related to Vishal?

A man says to a lady, "Your father is the father-­in-­law of my father's only child." How is the lady related to the man?

Pointing towards a boy, a girl says, "He is the only son of my mother's brother". How is the girl related to the boy ?

Introducing a boy, a man says, "He is the son of the brother of my grandfather's son." How is the boy related to the man?

Introducing a girl, Ankit says, "She is the sister of the son of my mother's sister". How is the girl related to Ankit?

The only brother of Ankit is the brother­in­law of Shweta. How Shweta is related to Ankit?

Preeti is the daughter of Rajesh and Amit is the son of Ankita. Rajesh is the only son of Rajan. Ankita is the daughter-in-law of Rajan. How is Preeti related to Amit ?