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

Guessing-game dialogue about one of the objects:
q: the flying boy?
a: No
q: the boy with the skateboard wearing red sneakers?
a: No
q: is it a person?
a: Yes
q: the leftmost person at the other side of the court?
a: No
q: is he skating?
a: No
q: is the person at the above of the ground?
a: Yes
q: the rightmost  holding a camera?
a: No
q: just behind the red sneaker boy?
a: Yes