Hello all I think most of you know the riddle that says: "Brothers and sisters have I none, but that man's father is my father's son." I am not asking for an answer for the riddle, I got it, even though I didn't understand it. I am afraid that I misunderstood the language of the riddle specially the last part of it. So you may consider my question as a comprehension one. but that man's father is my father's son did I understand this part the way you did? I don't know how to express myself better but let me ask you if it is like this: The father of that man is the son of my father. Is it like this or is there a gap in the language of the riddle that I can,t fill? Isn't the 's functioning the way we all know? Isn't what follows the 's a possession of what precedes? Please, Excuse my very simple language. I hope that the riddle is too hard to solve. I don't want my very simple language disappoints me.