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

Guessing-game dialogue about one of the objects:
q: Is it a person?
a: No
q: Is it a vehicle?
a: Yes
q: Is it on the right side of the picture?
a: No
q: In the middle?
a: No
q: Is it in the background?
a: Yes