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

Guessing-game dialogue about one of the objects:
q: is it a person?
a: Yes
q: is he on the train?
a: No
q: is he wearing blue?
a: Yes
q: is he at the left of the picture?
a: Yes
q: is he far?
a: Yes
q: is he closer to the red train?
a: No
q: Is he wearing dark blue?
a: Yes