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

Guessing-game dialogue about one of the objects:
q: Is it a vehicle?
a: No
q: Is it on the right half of the picture?
a: Yes
q: Is it a stoplight?
a: Yes
q: Is it a single stoplight?
a: N/A
q: Is it one of the three big ones up front?
a: Yes
q: Is it the left one?
a: Yes