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

Guessing-game dialogue about one of the objects:
q: is that human?
a: No
q: is that bat?
a: No
q: is that ball?
a: Yes
q: is that in yellow color?
a: Yes
q: is that in top of the image?
a: Yes