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

Guessing-game dialogue about one of the objects:
q: it is person?
a: No
q: it is van?
a: Yes
q: it is in the left?
a: No
q: it is in the right?
a: Yes
q: it is yellow?
a: N/A
q: it is the first van in the right?
a: No
q: the second one?
a: No
q: the third one?
a: Yes
q: it is van?
a: Yes