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

Guessing-game dialogue about one of the objects:
q: is it people?
a: No
q: is it skis?
a: Yes
q: is it the ones being carried by the person in red?
a: No
q: Is it the one with the person right behind him wearing blue?
a: No
q: the other guy to the left partially obstructed by the last person?
a: N/A
q: is it the whole skis?
a: Yes