Objects in the image:
category: skateboard
category: car
category: car
category: person
category: stop sign
category: car
category: backpack
category: car

Guessing-game dialogue about one of the objects:
q: is it a person?
a: No
q: skateboard ??
a: No
q: is it on the person?
a: Yes
q: back pack /?
a: Yes