Objects in the image:
category: person
category: tennis racket
category: person
category: person
category: person
category: person
category: person
category: person
category: person
category: sports ball
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 he in the foreground? on front of the blue wall?
a: No
q: is he in the right part of the crowd?
a: No
q: is he in the middle part of the crowd?
a: Yes
q: is he wearing glasses?
a: N/A
q: is he the one behind the players' head?
a: No
q: is one of the three in front?
a: No
q: does he wear a black hat?
a: N/A
q: does he wear a light blue tshirt?
a: No
q: is he left to this one?
a: Yes