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

Guessing-game dialogue about one of the objects:
q: is a person?
a: Yes
q: on a skateboard?
a: No
q: in front of the wall?
a: No
q: left side of crowd?
a: Yes
q: black shirt with a bit of blue?
a: No
q: can just see the head above the rail?
a: No