Objects in the image:
category: umbrella
category: sports ball
category: person

Guessing-game dialogue about one of the objects:
q: is it a person?
a: No
q: the towel on the grass?
a: No
q: the flowers on the wall?
a: No
q: the ball on his hand?
a: No
q: the cap on his head?
a: No
q: the window on the wall?
a: No
q: the tree in the picture?
a: No
q: the tall post?
a: No
q: the umbrella on the back?
a: Yes