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

Guessing-game dialogue about one of the objects:
q: Is it a person?
a: No
q: Is it a skateboard?
a: Yes
q: Is the skateboard being held by someone with a backpack?
a: Yes