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

Guessing-game dialogue about one of the objects:
q: IS IT SIGNAL?
a: No
q: IS IT PERSON?
a: No
q: IS IT CAR?
a: No
q: IS IT VEHICLE?
a: Yes