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

Guessing-game dialogue about one of the objects:
q: Is it a person?
a: Yes
q: Is his shirt red?
a: No
q: Is his shirt black?
a: No
q: Is he skating?
a: Yes
q: Is it the leftmost person?
a: Yes