A man is standing in front of a painting of a man and he tells us the following: 'Brothers and sisters have I none, but this man's father is my father's son.' Who is on the painting?

প্রশ্নঃ A man is standing in front of a painting of a man and he tells us the following: 'Brothers and sisters have I none, but this man's father is my father's son.' Who is on the painting?