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

Guessing-game dialogue about one of the objects:
q: is it a person?
a: Yes
q: is it one of the 2 players?
a: Yes
q: Is it Roger Federer?
a: No
q: is it the player with the white headband?
a: Yes