Objects in the image:
category: person
category: person
category: person
category: person
category: truck
category: person
category: person
category: car
category: car
category: car
category: person
category: bicycle
category: person
category: person
category: person
category: person
category: person
category: person

Guessing-game dialogue about one of the objects:
q: is it person?
a: Yes
q: person within that bus?
a: Yes
q: person in front row?
a: Yes
q: person with yellow shirt and red cap?
a: Yes