Objects in the image:
category: skis
category: skis
category: person
category: skis
category: person
category: skis
category: person
category: person
category: person
category: skis
category: person
category: person
category: skis
category: person

Guessing-game dialogue about one of the objects:
q: is it in left?
a: No
q: is it person?
a: No
q: is board ,?
a: Yes
q: is in front?
a: No
q: is backmost .?
a: Yes
q: is right .?
a: No
q: is it last 2 in backmost?
a: Yes
q: is left one?
a: No
q: is right one?
a: No
q: i it with the boy in right?
a: No
q: i it with the boy helmet in hand?
a: Yes
q: i he smiling?
a: No
q: is with boy helmet in head?
a: Yes
q: is back to the boy smiling?
a: N/A
q: does the boy  wearing helmet?
a: Yes