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

Guessing-game dialogue about one of the objects:
q: is it a person?
a: Yes
q: the one in the middle with yellow helmet?
a: No
q: so its just a set of legs?
a: Yes
q: the lone legs on the right?
a: No
q: i see two on the dock. do you see two too/only?
a: No
q: there's a blue leg on the right of the dock... that one?
a: No
q: on the white seat?
a: Yes