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

Guessing-game dialogue about one of the objects:
q: is it a person?
a: No
q: is it the train?
a: No
q: is it a sign?
a: No
q: is it to the left of the train?
a: Yes
q: is the traffic signal?
a: Yes