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

Guessing-game dialogue about one of the objects:
q: is a person?
a: Yes
q: are they playing?
a: No
q: are they on the field?
a: Yes