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

Guessing-game dialogue about one of the objects:
q: Is it alive?
a: No
q: Is it a plant/tree?
a: No
q: Is it on the horses back?
a: Yes
q: Is it green/black?
a: Yes
q: Is it black?
a: Yes