Objects in the image:
category: person
category: backpack
category: bus
category: car
category: car
category: person
category: motorcycle
category: chair
category: car
category: car
category: car
category: car
category: backpack
category: stop sign
category: person
category: person

Guessing-game dialogue about one of the objects:
q: Is it a person?
a: Yes
q: Is it the one who is holding the placard?
a: No
q: Is it the one who is running?
a: Yes