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

Guessing-game dialogue about one of the objects:
q: is it the truck?
a: No
q: is it a vehicle?
a: Yes
q: is it the police car?
a: No
q: is it the car beside the truck?
a: No
q: is it the black car parked?
a: No
q: is it white van beside it?
a: Yes