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

Guessing-game dialogue about one of the objects:
q: is a car?
a: No
q: is a vehicle?
a: No
q: is a signboard?
a: No
q: is a light pole?
a: No
q: is a traffic signal?
a: Yes
q: above the big orange vehicle in the back?
a: Yes
q: the whole signal?
a: Yes