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

Guessing-game dialogue about one of the objects:
q: is it a vehicle?
a: Yes
q: is it a bus?
a: No
q: is it a car?
a: Yes
q: is it the red car on the left?
a: No
q: is it the white van behind?
a: Yes