Objects in the image:
category: person
category: car
category: person
category: person
category: car
category: person
category: person
category: truck
category: car
category: car
category: person
category: car

Guessing-game dialogue about one of the objects:
q: is it a vehicle?
a: Yes
q: is it the purple truck?
a: No
q: is it the yellow car?
a: No
q: is it the red car?
a: No
q: is it the blue car next to the red car?
a: No
q: is it behind the people?
a: Yes