Objects in the image:
category: person
category: surfboard
category: surfboard
category: person
category: person
category: person
category: umbrella
category: surfboard
category: person
category: person
category: sports ball
category: person
category: person
category: person
category: surfboard
category: person
category: person
category: person
category: person

Guessing-game dialogue about one of the objects:
q: is a person?
a: Yes
q: among three in front?
a: Yes
q: left one?
a: No
q: middle one?
a: Yes