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

Guessing-game dialogue about one of the objects:
q: is it a human?
a: Yes
q: is it on right?
a: No
q: is he/she behind tree?
a: Yes