Objects in the image:
category: skateboard
category: person
category: skateboard
category: skateboard
category: skateboard
category: person
category: skateboard
category: skateboard
category: person
category: person
category: person
category: person
category: person
category: person

Guessing-game dialogue about one of the objects:
q: is it a person?
a: No
q: is it a skateboard?
a: Yes
q: Is it airborne?
a: No
q: is it the one used by the guy with black shoes?
a: No
q: is it the one used by the guy with red shoes?
a: No
q: is the skateboard touching the floor?
a: Yes
q: are all its wheels touching the floor?
a: No
q: is a person's foot on it causing one side of the board to lift up?
a: Yes
q: is that person wearing white shirt?
a: Yes