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 a train?
a: No
q: is it train related?
a: Yes
q: is it the train track?
a: No
q: is it a train signal?
a: Yes
q: is it on the left?
a: Yes