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

Guessing-game dialogue about one of the objects:
q: Is it a person?
a: No
q: is it something a person is holding?
a: Yes
q: is it a racket?
a: Yes
q: is the person in red?
a: No
q: is he in all black?
a: No
q: is the person holding the racket in a gray shirt?
a: Yes