Objects in the image:
category: tennis racket
category: person
category: sports ball
category: person
category: tennis racket
category: sports ball
category: tennis racket
category: person
category: person

Guessing-game dialogue about one of the objects:
q: is it a person?
a: No
q: is it something held by a person?
a: No
q: it is worn by a person?
a: No
q: Is it a ball?
a: Yes
q: is it in the top left picture?
a: Yes