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

Guessing-game dialogue about one of the objects:
q: is it vehicle?
a: No
q: is it on left half of picture?
a: No
q: is it on road?
a: No
q: is it signal?
a: Yes
q: is it on the middle?
a: No
q: Is it the one near to the cars?
a: Yes