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

Guessing-game dialogue about one of the objects:
q: is it a person?
a: No
q: is it used by a person?
a: Yes
q: is it on the person's feet?
a: Yes
q: is it like a sled?
a: Yes
q: is it used by the person in blue pants?
a: Yes
q: is it just one sled?
a: Yes
q: is it in front?
a: No
q: it's the one at the back?
a: Yes
q: does the person with the sled wear black helmet?
a: No
q: is the person wearing white helmet?
a: Yes