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

Guessing-game dialogue about one of the objects:
q: surf board?
a: No
q: person ..?
a: Yes
q: left half?
a: Yes
q: the man standing in green shirt?
a: Yes