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

Guessing-game dialogue about one of the objects:
q: Is it a person, part of a person or something a person is wearing or holding?
a: Yes
q: IS it a whole person?
a: No
q: Is it a ski pole?
a: No
q: Is it something that the person is wearing?
a: Yes
q: IS it a jacket?
a: No
q: IS it a helmet?
a: No
q: IS it pants?
a: No
q: IS it a backpack?
a: Yes
q: IS it the backpack on the third person from the left with the red jacket?
a: Yes