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

Guessing-game dialogue about one of the objects:
q: is a car?
a: No
q: is a traffic signal?
a: No
q: is a person?
a: Yes
q: who is driving the front black car?
a: Yes