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

Guessing-game dialogue about one of the objects:
q: is it a person?
a: Yes
q: the main skateboarder?
a: No
q: person wearing white to the left?
a: No
q: guy wearing a green shirt to the right?
a: Yes