Objects in the image:
category: person
category: skis
category: backpack
category: person
category: backpack
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 ski?
a: No
q: is it a ski pole?
a: No
q: is it a tree?
a: No
q: is it a backpack?
a: Yes
q: is it on the first person? the one with the red shirt?
a: No
q: is it on the person at the end wearing black and red?
a: No
q: is it on the person at the very end?
a: No
q: is it on the person in brown? the second person?
a: Yes