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

Guessing-game dialogue about one of the objects:
q: Is it a person?
a: No
q: Is it a vehicle?
a: Yes
q: Is it on the left side of the picture?
a: Yes
q: Is it the 1st one?
a: No
q: Is it the 2nd one?
a: No
q: Is it the 3rd one?
a: No
q: Is it the 4th one?
a: No
q: Is it under the bridge?
a: Yes
q: Is it the 1st one under the bridge?
a: Yes