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

Guessing-game dialogue about one of the objects:
q: is a person?
a: Yes
q: tennis player?
a: No
q: black shirt?
a: No
q: white shirt?
a: No
q: blue shirt?
a: No
q: red shirt?
a: No
q: yellowish ??
a: No
q: is in the first row of the bleachers?
a: No
q: near the red/pink shirt?
a: Yes
q: right of him?
a: Yes
q: i mean right from our point of view, correct?
a: Yes