Ok this is another riddle I made
A man looks at a painting in a museum and says, “Brothers and sisters I have none, but that man’s father is my father’s son.” Who is in the painting?

first one gets it right gets brainiest

Explanation:

Let's break the puzzle down in to smaller pieces and then put them together and see what we've got. 'My father's son.' We'll draw a diagram from the perspective of the person speaking.

My Father's son is my sibling.

• 'That man's Father' appears in our diagram already, we know him as My Father's son. They are the same remember that man's father is my father's son'.

•'Brothers And Sisters I Have None' - thus far we have identified My Father's Son and Me as separate people. But if I have no brothers or sisters then my father's son can only be me.

• To clarify 'That Man' is my son. If I have no brothers and sisters then my father's son can only be me. Which means I (me) am that man's father.