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

Guessing-game dialogue about one of the objects:
q: is it human?
a: No
q: is it a person?
a: No
q: is it a board?
a: Yes
q: is it under the person skating?
a: No
q: is it under the person standing at the top of ramp on the right?
a: Yes