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

Guessing-game dialogue about one of the objects:
q: is it a person?
a: Yes
q: is it on the left half of the picture?
a: No
q: is it wearing blue?
a: No
q: is it wearing black?
a: Yes
q: is it on the edge of the picture?
a: No