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

Guessing-game dialogue about one of the objects:
q: is it a person?
a: No
q: is it a train?
a: No
q: is it a sign?
a: No
q: is it a bag?
a: No
q: is it tracks?
a: No
q: is it a car?
a: Yes