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

Guessing-game dialogue about one of the objects:
q: is it a person?
a: No
q: is it a surfboard?
a: Yes
q: is it one of the two in front?
a: Yes
q: is it the one with the red fin?
a: No