Blood Relations...

D said, "A's father is the only brother of my sister's son". How is A's father related to D?

Anil, introducing a girl in a party said, "She is the wife of the grandson of my mother". How Is Anil related to the girl?

Poonam said to her friend, yesterday I attended a birthday party of the son of the only son-in-law of my mother's mother. How is Poonam related to the boy whose birthday party she attended?

Introducing Rajesh, Neha said, "His brother's father is the only son of my grandfather How Is Neha related to Rajesh?

Mohit said to Neelam, "Your only brother's son is my wife's brother" How is Neelam related to the wife of Mohit?

Pointing to a photograph of a lady, Mr Kapoor said, "She is the wife of my son's only brother How is the lady related to Mr Kapoor?

Seema told Sparsh, "The girl I met yesterday at the beach was the youngest daughter of the brother-in-law of my friend's mother". How is the girl related to Seema's friend?

Rajeev said to Sanjeev, "That boy playing football is younger of the two brothers of the daughter of my father's wife." How the boy playing football is related to Rajeev?

Study the following information carefully to answer the questions that follow:

Aditya Mishra has three children: Urmila/ Raghu and Sumit. Sumit is married to Roma, the eldest daughter of Mr and Mrs Sahoo. The Sahoo's married their youngest daughter Sneha to the eldest son of Mr and Mrs Sharma and they had two children Sandeep and Shefali. Sahoo have two other children, Rohit and Nishu, each elder to Sneha. Sohan and Arun are sons of Sumit and Roma. Latika is the daughter of Sandeep.

What is the surname of Sohan?