Objects in the image:
category: person
category: traffic light
category: car
category: car
category: car
category: traffic light
category: car
category: traffic light
category: car
category: person
category: car
category: person
category: motorcycle
category: person
category: car
category: backpack
category: traffic light
category: car

Guessing-game dialogue about one of the objects:
q: is it person?
a: Yes
q: is the person on bike?
a: Yes