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

Guessing-game dialogue about one of the objects:
q: is it a person?
a: No
q: is it on the ground?
a: Yes
q: is it a bag?
a: Yes
q: is it a big bag?
a: No
q: is it between two big bags?
a: No