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

Guessing-game dialogue about one of the objects:
q: person in front?
a: No
q: skateboard ??
a: Yes
q: the front guy's?
a: No
q: the guy turning other way with grey tee and black denims?
a: No
q: one of the two people on the right using it?
a: No
q: yellow tee guy?
a: Yes