Objects in the image:
category: car
category: traffic light
category: car
category: car
category: car
category: truck
category: truck
category: train
category: car
category: car
category: car
category: traffic light
category: car
category: car
category: car
category: truck

Guessing-game dialogue about one of the objects:
q: Is it white?
a: No
q: Is it train signal?
a: Yes
q: Is it left?
a: No
q: Is it on top?
a: N/A
q: Is it upper signal?
a: N/A