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

Guessing-game dialogue about one of the objects:
q: Is it a person?
a: No
q: Is it something a person is wearing?
a: No
q: Is it the tennis racket?
a: No
q: Is it something written on the blue wall?
a: No
q: is it one of the walls?
a: No
q: Is it all or part of the scoreboard?
a: N/A
q: Is it the whitish thing sticking out from behind our right of the scoreboard?
a: No
q: is it what looks like maybe a shadow behind the whitish thing sticking out from behind our right of the scoreboard?
a: No
q: Is it part of the court?
a: No
q: Is it the yellow tennis ball flying in front of the scoreboard?
a: Yes