Objects in the image:
category: person
category: stop sign
category: traffic light
category: traffic light
category: person

Guessing-game dialogue about one of the objects:
q: is it a sign?
a: No
q: is it part of the bridge?
a: No
q: is it part of the train crossing?
a: No
q: is it in the sky?
a: No
q: is it metal?
a: No
q: is it a light?
a: No
q: is it a person?
a: Yes