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

Guessing-game dialogue about one of the objects:
q: is it a person?
a: Yes
q: is it the man in the blue jeans and the dark gray jacket?
a: No
q: is it one of the men in front of the fountain?
a: Yes
q: is it the guy in the gray shirt and black pants?
a: No
q: is it the guy in the blue shirt and white pants with a hat on?
a: Yes