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

Guessing-game dialogue about one of the objects:
q: is it a vehicle?
a: No
q: is it a building?
a: No
q: is it a sign?
a: No
q: is it the pedestrian crossing light?
a: Yes
q: the part where the hand is shown?
a: Yes