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

Guessing-game dialogue about one of the objects:
q: is it ball?
a: Yes
q: is it left first from left?
a: No
q: is it second from left?
a: No
q: is it the third from the left?
a: Yes
q: consider only foreground balls only?
a: Yes