Objects in the image:
category: person
category: tennis racket
category: person
category: person
category: person
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 it a person?
a: Yes
q: in the playing field?
a: No
q: the lady?
a: No
q: wearing glasses?
a: No
q: in the front row?
a: No
q: wearing cap?
a: Yes
q: the blue cap?
a: No