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

Guessing-game dialogue about one of the objects:
q: is a person?
a: No
q: is the bus?
a: No
q: is a car?
a: No
q: is a suitcase?
a: No
q: is a traffic light?
a: Yes
q: traffic light with green light on?
a: Yes