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

Guessing-game dialogue about one of the objects:
q: is it a person?
a: No
q: is it in contact with a person?
a: Yes
q: is the person riding a wave?
a: No
q: is the person standing at shore?
a: Yes
q: is it the surf board?
a: Yes