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

Guessing-game dialogue about one of the objects:
q: is it a person?
a: No
q: is a person wearing, holding, or riding it?
a: Yes
q: is it a skateboard?
a: Yes
q: Ridden by a boy in nike hoodie?
a: No