Objects in the image:
category: person
category: bench
category: person
category: person
category: person
category: sports ball
category: person
category: person
category: person
category: tennis racket
category: person
category: person
category: person
category: person
category: person
category: cell phone

Guessing-game dialogue about one of the objects:
q: is it a person?
a: No
q: is it a racquet?
a: No
q: ball ??
a: Yes
q: in the guy sitting by the racquet?
a: Yes