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

Guessing-game dialogue about one of the objects:
q: is it a person?
a: No
q: is it green?
a: No
q: is it a shadow?
a: No
q: is a person touching/wearing it?
a: No
q: is it a pair of skis?
a: Yes
q: is it on the left of the people?
a: No
q: is it blue?
a: No
q: is it on the middle rack?
a: No
q: is it black?
a: Yes