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

Guessing-game dialogue about one of the objects:
q: a player?
a: Yes
q: the net?
a: No
q: in white?
a: Yes
q: left from the main?
a: No
q: just right from him?
a: Yes
q: behind the one in black?
a: No
q: behind a pole?
a: Yes