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

Guessing-game dialogue about one of the objects:
q: Is it a person?
a: Yes
q: IS the person wearing a red jacket?
a: Yes
q: Is it the person not on the boat?
a: No
q: Is it the person holding on to the sail?
a: Yes