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

Guessing-game dialogue about one of the objects:
q: is it a person?
a: Yes
q: are they behind the fence?
a: Yes
q: are they wearing a white shirt?
a: No
q: are they wearing a blue shirt?
a: Yes