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

Guessing-game dialogue about one of the objects:
q: is it a person?
a: No
q: is it an object?
a: Yes
q: is the object green?
a: No
q: is the object a sports instrument?
a: Yes
q: is the object red?
a: Yes