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 person?
a: No
q: Is it on the court?
a: Yes
q: Is it round?
a: Yes
q: Is it near the net?
a: No
q: Is it in the air?
a: No
q: Is it beside a person, near the wall?
a: Yes
q: Does it have numbers on it?
a: Yes