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

Guessing-game dialogue about one of the objects:
q: is it a person?
a: No
q: Is it a tennis bat?
a: No
q: Is a ball?
a: Yes