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

Guessing-game dialogue about one of the objects:
q: is a vehicle?
a: No
q: is a person?
a: No
q: is a sign?
a: No
q: is a traffic light?
a: Yes
q: showing green facing us?
a: Yes