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

Guessing-game dialogue about one of the objects:
q: Is it a person?
a: No
q: Is it on or in the water?
a: Yes
q: Is it one of the boards?
a: Yes
q: is it the red one?
a: No
q: the white one on the left of the picture?
a: Yes