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

Guessing-game dialogue about one of the objects:
q: is it person?
a: No
q: is it something on his foot?
a: Yes
q: is it with the yellow shirt?
a: No
q: is it with the person kneeling?
a: No
q: is he in the right of screen?
a: Yes