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

Guessing-game dialogue about one of the objects:
q: is it a vehicle?
a: Yes
q: is it the bus?
a: No
q: is it the van?
a: No
q: is it the dark car in the background?
a: Yes