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

Guessing-game dialogue about one of the objects:
q: is it a person?
a: No
q: does it have words written on it?
a: No
q: is it a skiing equipment?
a: No
q: is it the pole?
a: No
q: is it being worn or held by people?
a: Yes
q: is it glasses?
a: No
q: is it a bag?
a: Yes
q: is it worn by the person in orange?
a: Yes
q: is it black?
a: Yes