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

Guessing-game dialogue about one of the objects:
q: is it a tennis player?
a: No
q: is it a human?
a: No
q: is it a tennis?
a: N/A
q: is it a tennis racket?
a: No
q: is it a ball?
a: Yes
q: is it in the left picture?
a: Yes