Objects in the image:
category: person
category: skateboard
category: person
category: person
category: person
category: person
category: person
category: person

Guessing-game dialogue about one of the objects:
q: is it a person?
a: Yes
q: is it the subject of the photo, the large skateboarder in the center?
a: No
q: is it a person?
a: Yes
q: is it the subject skateboarder?
a: Yes
q: the main skateboarder in the photo?
a: No
q: A skateboarder in the background, on the left side?
a: No
q: There are two skateboarders on the right side in the background.  Is it the closer person?
a: Yes