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

Guessing-game dialogue about one of the objects:
q: is it a person?
a: Yes
q: is it one in the court?
a: No
q: is he or she among the audience?
a: Yes
q: is he or she in the first row from below?
a: No
q: in the second row?
a: Yes
q: is he wears blue?
a: Yes
q: is it a female?
a: Yes
q: is she wears green?
a: No
q: is she sitting between the persons dressed in blue?
a: Yes