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

Guessing-game dialogue about one of the objects:
q: is this a sign?
a: No
q: is it a vehicle?
a: Yes
q: is the vehicle blue?
a: No
q: is the vehicle white?
a: Yes
q: is it the white care pointing right?
a: No
q: is it the white care pointing left in the far background?
a: Yes