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

Guessing-game dialogue about one of the objects:
q: Is it a person?
a: Yes
q: Is it one of the front two people?
a: Yes
q: Is it a person?
a: Yes
q: Is that person surfing?
a: Yes
q: Is his surfboard blue?
a: Yes