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

Guessing-game dialogue about one of the objects:
q: is it a train?
a: No
q: is it a building?
a: No
q: the platform then?
a: No
q: a blue fence?
a: No
q: is it on the train?
a: No
q: is it a stoplight?
a: Yes
q: above the blue fence?
a: Yes