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

Guessing-game dialogue about one of the objects:
q: is it a person?
a: Yes
q: one on the surfboard?
a: No
q: one of three behind him?
a: No
q: one of those on the bridge?
a: Yes