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

Guessing-game dialogue about one of the objects:
q: is it clock?
a: No
q: is it car?
a: No
q: is it person?
a: No
q: is it signal?
a: Yes
q: is it with red signal on?
a: No
q: is it with green signal on?
a: Yes