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

Guessing-game dialogue about one of the objects:
q: the concrete mixer?
a: No
q: left of that?
a: No
q: between the red part of the truck and the edge of the picture?
a: Yes
q: Wow. Is it white?
a: Yes
q: the only white thing back there?
a: Yes