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

Guessing-game dialogue about one of the objects:
q: is it a person?
a: Yes
q: is he or she on the court?
a: Yes
q: is it the person on the right who is serving?
a: No
q: is it the referee in the chair?
a: No
q: is it the player in white on the left?
a: Yes