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

Guessing-game dialogue about one of the objects:
q: is it a player?
a: No
q: is it a person?
a: Yes
q: is he skating?
a: No
q: is he wearing red shirt?
a: Yes