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

Guessing-game dialogue about one of the objects:
q: is it train?
a: No
q: is it any signal light?
a: No
q: is it part of train?
a: N/A
q: is it any train box?
a: No
q: is it light?
a: No
q: is it on green box?
a: No