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

Guessing-game dialogue about one of the objects:
q: is it a person?
a: N/A
q: is it a board?
a: No
q: is it not a skateboard?
a: No
q: is it any thing apart from sea, person and skateboard in the photo?
a: Yes
q: can we see it clearly?
a: Yes
q: is it waves?
a: No
q: is it with the person?
a: Yes
q: is it the person?
a: No