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

Guessing-game dialogue about one of the objects:
q: is it person?
a: No
q: is it background?
a: No
q: is it in train?
a: No
q: is it left side?
a: No
q: is it center?
a: Yes
q: is it sign?
a: No
q: is it object?
a: Yes