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

Guessing-game dialogue about one of the objects:
q: is it one of the traffic lights?
a: No
q: is it a car?
a: No
q: is it a person?
a: Yes
q: is it one of the four person?
a: No
q: is it one of the two person at the back of the gray car?
a: Yes
q: is it the one with the black shirt?
a: No
q: is it the one with the green?
a: Yes