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

Guessing-game dialogue about one of the objects:
q: is it a person?
a: No
q: is it a horse?
a: No
q: is it on the person?
a: No
q: is it on the horse?
a: Yes
q: is it green?
a: No
q: is it brown bag?
a: Yes