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

Guessing-game dialogue about one of the objects:
q: bus ..?
a: No
q: car ..?
a: No
q: traffic light ..?
a: Yes
q: on the right side?
a: No
q: on the left side with green light?
a: Yes