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

Guessing-game dialogue about one of the objects:
q: traffic light?
a: No
q: person ??
a: No
q: vehicle ??
a: Yes
q: in front?
a: Yes
q: silver color?
a: Yes
q: whole one?
a: Yes