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

Guessing-game dialogue about one of the objects:
q: is it a person?
a: No
q: is it a train?
a: No
q: is it a building?
a: No
q: is it a  fence?
a: No
q: is it part of the landscape in the background?
a: No
q: is it yellow?
a: No
q: it it on the train track?
a: No
q: is it the traffic light?
a: Yes