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

Guessing-game dialogue about one of the objects:
q: is it train?
a: No
q: is it bridge?
a: No
q: is it rail track?
a: No
q: is it train lights?
a: Yes
q: is it single light?
a: Yes
q: is it the down left one?
a: Yes