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

Guessing-game dialogue about one of the objects:
q: is it human?
a: No
q: is it used by a human?
a: Yes
q: is it black?
a: N/A
q: is it being used by a man in black?
a: N/A
q: is it a skateboard?
a: Yes
q: is it in the left half of the photo?
a: No
q: are two front wheels of it visible?
a: Yes