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

Guessing-game dialogue about one of the objects:
q: is it person?
a: No
q: is it traffic light?
a: Yes
q: Is the one part red, green or yellow?
a: No
q: is it in front?
a: No
q: is it the one where person signal is on?
a: Yes