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

Guessing-game dialogue about one of the objects:
q: is it a person?
a: No
q: bus ??
a: No
q: car ??
a: Yes
q: is it black?
a: Yes