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

Guessing-game dialogue about one of the objects:
q: is it a car?
a: No
q: is it a person?
a: No
q: is it on the car?
a: No
q: is it a sign?
a: No
q: is it a window?
a: No
q: is it a building?
a: No
q: is it a tree?
a: No
q: is it the street?
a: No
q: is it a lamp?
a: No
q: is it the sidewalk?
a: No
q: is it the sky?
a: No
q: is it on a person?
a: Yes