Objects in the image:
category: traffic light
category: truck
category: car
category: traffic light
category: traffic light
category: car
category: traffic light
category: car
category: truck
category: car
category: traffic light

Guessing-game dialogue about one of the objects:
q: is it a vehicle?
a: No
q: is it traffic light?
a: Yes
q: is it yellow light?
a: Yes
q: on top of green vehicle?
a: Yes