Objects in the image:
category: boat
category: boat
category: surfboard
category: person
category: boat
category: boat
category: person
category: person
category: boat
category: boat
category: person
category: person
category: person
category: boat

Guessing-game dialogue about one of the objects:
q: is it a person?
a: Yes
q: are they on a sail?
a: Yes
q: are they wearing black?
a: No
q: are they on the green sail?
a: Yes