Blood Relations Questions

While posing for a family photo, the father is standing to the right of the son and left of the grandmother. The mother is sitting to the left of her daughter and right of the grandmother. Who is seated in the middle?

P is the brother of Q. Q is the brother of R. P is the son of S. Based these three statements, much of the following statements cannot be definitely true?

A is D's brother. D is the son of Mrs. C. B is Mrs. C's father. How is A related to B?

Mathur's uncle's daughter's brother is Salmi. How is Sonm related to Mather? 

Ram said , "Sita is my paternal great grandfather's only son's only daughter-in-law". How is Sita related to Ram?

Looking at a lady, Joey said, "She is the mother of my mother's mother-in-law's husband". How is the lady related to Joey's father?

P is S's mother's only son's wife. How is P related to S?

Pointing towards a lady in a photograph, Ram says, "Her mother is the mother­in­law of my father's brother". How is the lady related to Ram?