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

Guessing-game dialogue about one of the objects:
q: Is it a person?
a: No
q: IS it the building?
a: No
q: Is it on the water?
a: Yes
q: Is it the surfboard?
a: Yes
q: Is it the board right in front?
a: No
q: Is it the board on which the guy with the white tee is surfing on?
a: Yes
q: Is it the full board what can be seen to us?
a: Yes