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

Guessing-game dialogue about one of the objects:
q: IS IT A PERSON?
a: Yes
q: ARE THEY HOLDING A RACKET?
a: No
q: Are they in front of the net?
a: No
q: ARE THEY IN BACK?
a: N/A
q: ARE THEY ON THE SIDE OF THE NET?
a: Yes
q: IS HE behind THE PERSON?
a: No
q: Is he in front of the other person?
a: Yes