Objects in the image:
category: person
category: backpack
category: skateboard
category: skateboard
category: backpack
category: skateboard
category: person
category: person
category: person
category: person
category: backpack
category: backpack
category: skateboard

Guessing-game dialogue about one of the objects:
q: is it a person?
a: No
q: is it a skateboard?
a: No
q: is it a bag?
a: Yes
q: is it the backpack the kid in the blue shirt is wearing?
a: No
q: is it the brown bag next to him?
a: No
q: is it the black bag?
a: Yes