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

Guessing-game dialogue about one of the objects:
q: is it a person?
a: No
q: is it the white tent?
a: No
q: something that somebody is wearing or holding?
a: No
q: is it the sand?
a: No
q: the banner on the right?
a: No
q: one/all of the boards lying on the ground?
a: Yes
q: is it all of them?
a: No
q: Is it mostly blue?
a: Yes
q: is it a person?
a: No
q: is it a board?
a: Yes
q: is it blue?
a: Yes
q: is it on the far away side?
a: Yes
q: is it the last one?
a: No
q: is it the 2nd to last one?
a: Yes