Objects in the image:
category: car
category: toothbrush
category: car
category: person
category: car
category: car
category: car
category: car
category: car
category: bicycle

Guessing-game dialogue about one of the objects:
q: is it a person?
a: No
q: is it a vehicle?
a: Yes
q: is it a car?
a: Yes
q: is it in front of the blue van?
a: No
q: is it the 1st car behind the blue van?
a: No
q: is it the 2nd car behind the blue van?
a: No
q: is it the 3rd car behind the blue van?
a: No
q: is it the blue van?
a: Yes