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

Guessing-game dialogue about one of the objects:
q: is it a person?
a: No
q: is it an item being worn or held?
a: Yes
q: is it a snowboard?
a: Yes
q: is it the red one?
a: No
q: is it the one being held by the person in blue?
a: Yes