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

Guessing-game dialogue about one of the objects:
q: Is it a person?
a: No
q: Is it a light?
a: No
q: Is it green?
a: No
q: Is it a door?
a: No
q: Is it in the middle of the front track?
a: No
q: Is it one of the trains?
a: Yes
q: Is it the front train?
a: No