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

Guessing-game dialogue about one of the objects:
q: is it a person?
a: No
q: truck ??
a: Yes
q: fire truck?
a: Yes
q: can we see the front of the truck?
a: No
q: is it one of those two in the middle of the picture?
a: Yes
q: left one?
a: N/A
q: left one of those two in the middle?
a: Yes