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

Guessing-game dialogue about one of the objects:
q: person ??
a: No
q: backpack ??
a: No
q: surf board?
a: Yes
q: yellow one being held?
a: Yes