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

Guessing-game dialogue about one of the objects:
q: Is it a person?
a: No
q: Is it a surf board?
a: Yes
q: Is it the surf board sticking up in the sand in the foreground of the picture?
a: No
q: Is it the light blue surfboard that the person in a green shirt is sitting on in the the water?
a: No
q: Is it the surf board that the two people are on in the water?
a: Yes
q: So moving from the foreground of the picture toward the background, it is the third surf board that we can see?
a: Yes