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

Guessing-game dialogue about one of the objects:
q: is it person?
a: No
q: is it bag?
a: Yes
q: is it front one?
a: Yes
q: is it gray?
a: Yes