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 on the road?
a: Yes
q: is it white stripes?
a: No
q: is it traffic light?
a: Yes
q: Is it the one in front of the Hitachi bus?
a: Yes
q: with the red light on it?
a: No
q: on the middle of the road?
a: Yes