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

Guessing-game dialogue about one of the objects:
q: a traffic light?
a: No
q: vehicle ??
a: Yes
q: on the left?
a: Yes
q: the van?
a: No