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

Guessing-game dialogue about one of the objects:
q: is it a sign?
a: N/A
q: is it a light?
a: Yes
q: is it red?
a: Yes