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

Guessing-game dialogue about one of the objects:
q: is it the train?
a: No
q: is it a person?
a: No
q: is it a building?
a: No
q: is it blue?
a: No
q: is it a sign?
a: No
q: is it part of the train platform?
a: No
q: is it a tree?
a: No
q: is it part of a building?
a: No
q: is it on the left half of the picture?
a: No
q: is it a light?
a: Yes
q: is it green?
a: No
q: is it red?
a: No
q: is it lit up?
a: No
q: is it vertical?
a: Yes