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

Guessing-game dialogue about one of the objects:
q: is it a vehicle?
a: Yes
q: does it have its lights on?
a: No
q: is it the truck ahead of the bike?
a: Yes