Objects in the image:
category: person
category: person
category: person
category: skateboard
category: person
category: person
category: skateboard
category: person
category: person
category: skateboard
category: person
category: skateboard
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 skate board?
a: Yes
q: is someone standing on it?
a: Yes
q: is it a boy in red?
a: No
q: does he have a black shirt and white cap?
a: Yes