Objects in the image:
category: person
category: snowboard
category: person
category: skis
category: skis
category: person
category: person
category: skis
category: person
category: person
category: skis
category: person
category: skis
category: person
category: skis
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 pair of skis?
a: Yes
q: is it one of the pairs the group of 3 is wearing?
a: Yes
q: is it the childs skis?
a: No
q: is it the person in the blue jackets?
a: Yes
q: is it just one ski?
a: No