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

Guessing-game dialogue about one of the objects:
q: is it vehicle?
a: No
q: is it sign board?
a: No
q: is it on floor?
a: Yes
q: is it person?
a: No
q: is it green?
a: Yes