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

Guessing-game dialogue about one of the objects:
q: is it a vehicle?
a: No
q: is it a building?
a: No
q: is it a plant?
a: No
q: is it a lightpost?
a: No
q: is it the road?
a: No
q: is it a sign?
a: No
q: is it on a vehicle?
a: N/A
q: is it a logo?
a: No
q: is it a license plate?
a: No
q: is it a traffic light?
a: No
q: is it part of a vehicle?
a: No
q: is it the sky?
a: No
q: is it the chinese words on the vehicle?
a: No
q: is it the median?
a: Yes