Objects in the image:
category: traffic light
category: car
category: truck
category: car
category: traffic light
category: traffic light
category: truck
category: traffic light
category: car

Guessing-game dialogue about one of the objects:
q: is it part of the building?
a: No
q: is it a signal?
a: Yes
q: is it the one with the green bike?
a: No
q: is it the one with the red bike?
a: No
q: is it in the background?
a: Yes
q: does it have several signs on it with a red upside down triangle sign on top?
a: No
q: is it on the sidewalk in the background?
a: Yes