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

Guessing-game dialogue about one of the objects:
q: is it a car or truck?
a: Yes
q: is it in the background?
a: Yes
q: is it a truck?
a: Yes
q: red one, front of the line in background?
a: Yes