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

Guessing-game dialogue about one of the objects:
q: is it a person?
a: No
q: is it a sign?
a: No
q: is it a building?
a: No
q: is it a tree?
a: No
q: is it a pole?
a: No
q: is it an obstacle?
a: No
q: is it in the air?
a: No
q: is it in the foreground?
a: No
q: is it a car?
a: Yes
q: is it a van?
a: Yes