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

Guessing-game dialogue about one of the objects:
q: is it a luggage rack?
a: No
q: is it a plane?
a: No
q: is it a bus?
a: No
q: is it a vehicle?
a: Yes