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

Guessing-game dialogue about one of the objects:
q: is it a person?
a: Yes
q: is it one of the 3 on the wave?
a: No
q: is it one of the 2 on the jet ski?
a: Yes
q: is it the jet ski on the left?
a: Yes
q: is it the person in front?
a: Yes