Objects in the image:
category: backpack
category: bottle
category: car
category: person
category: person
category: car
category: handbag
category: person
category: car
category: car
category: bus
category: bus
category: car
category: person
category: person

Guessing-game dialogue about one of the objects:
q: is it person?
a: No
q: is it backpack?
a: No
q: is it big red bus?
a: No
q: is it vehicle?
a: Yes
q: white car behind red bus?
a: Yes