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

Guessing-game dialogue about one of the objects:
q: is it a person?
a: No
q: is it the wave?
a: No
q: is it all of the water?
a: No
q: is it the surfboard?
a: Yes
q: is the guy in yellow riding it?
a: Yes