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

Guessing-game dialogue about one of the objects:
q: is it person?
a: Yes
q: the one in front holding board?
a: No
q: is it sitting?
a: No
q: is it on left side of the image?
a: Yes
q: does he/she has something head?
a: Yes
q: the leftmost one?
a: No
q: the guy next to him with pointing cap?
a: Yes