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

Guessing-game dialogue about one of the objects:
q: a living thing?
a: No
q: the clothes on a person?
a: No
q: is the shoes or skateboard?
a: Yes
q: is it the skateboard?
a: Yes
q: the skateboard the person in black shirt is riding?
a: No
q: the skateboard the person in white shirt is riding?
a: Yes