Objects in the image:
category: person
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: person

Guessing-game dialogue about one of the objects:
q: is it a person?
a: No
q: is it on the left side of the picture?
a: No
q: is it something on the person?
a: No
q: is it the ball?
a: No
q: is it something the man wearing or holding?
a: Yes
q: does he hold it in his hand?
a: Yes
q: is it the thing you play tennis with?
a: Yes