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

Guessing-game dialogue about one of the objects:
q: is the sign?
a: No
q: is it the police?
a: Yes
q: is it the police with the back to the picture?
a: No
q: is it the police officer whose face you can see?
a: Yes