Objects in the image:
category: person
category: truck
category: truck
category: bus

Guessing-game dialogue about one of the objects:
q: is it a person?
a: No
q: is the person wearing it?
a: No
q: is it on a vehicle?
a: No
q: is the person holding it?
a: No
q: is it a tree?
a: No
q: is it on the floor?
a: No
q: is it part of the house?
a: No
q: is it graffiti?
a: No
q: is it on the right side?
a: No
q: is it on the vehicle?
a: Yes
q: is it the vehicle itself?
a: Yes