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

Guessing-game dialogue about one of the objects:
q: is it a person?
a: Yes
q: is it one of 4 player at ground?
a: Yes
q: can u see 2 players on left and 2 on right?
a: Yes
q: is it the one on left side?
a: Yes
q: in left side..is it the one with white cap?
a: No