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

Guessing-game dialogue about one of the objects:
q: is it vehicle?
a: No
q: is it anything in the vehicle?
a: Yes
q: is it left?
a: No
q: is it right?
a: No
q: is it at the center?
a: No
q: is it in the yellow bus on right?
a: No
q: is it a person?
a: Yes
q: is he sitting on the top?
a: Yes
q: is he white?
a: Yes