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

Guessing-game dialogue about one of the objects:
q: is it a person?
a: Yes
q: is it a person?
a: Yes
q: is it a player on the court?
a: No
q: is it someone on the sidelines?
a: No
q: Is it someone in the stands/crowd?
a: Yes
q: just one person?
a: Yes
q: are they wearing white?
a: Yes
q: Are they the four people dressed in white sitting directly above the scoreboard?
a: Yes
q: is it the first person above board that you can see his knees?
a: Yes