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

Guessing-game dialogue about one of the objects:
q: is it a vehicle?
a: No
q: is it a stoplight?
a: Yes
q: the front one with the green light?
a: No
q: the one with the green arrow?
a: No
q: next to the front one?
a: Yes