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

Guessing-game dialogue about one of the objects:
q: is it a person?
a: Yes
q: is it a payer on the court?
a: No
q: are they on the court?
a: Yes
q: are they wearing a red cap?
a: No
q: is it the guy on the left by the clock?
a: Yes