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

Guessing-game dialogue about one of the objects:
q: is a person?
a: Yes
q: 1 of the 4 players?
a: Yes
q: on this side of the net?
a: Yes
q: on the left  side?
a: Yes