Objects in the image:
category: person
category: person
category: tennis racket
category: person
category: person
category: person
category: person
category: person
category: person
category: person
category: tennis racket
category: person
category: person
category: person
category: clock
category: person

Guessing-game dialogue about one of the objects:
q: is it a player?
a: No
q: ball ..  l?
a: No
q: racket , ,?
a: No
q: Is it a person?
a: No
q: Is it the net?
a: No
q: Is it the clock?
a: Yes