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

Guessing-game dialogue about one of the objects:
q: is it person?
a: Yes
q: left most one on red sailing thing?
a: No
q: right most guy?
a: No
q: Is it the guy in the water with the red sail?
a: No
q: the third guy?
a: No
q: the fourth guy left of green sail?
a: Yes