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

Guessing-game dialogue about one of the objects:
q: is it a person?
a: Yes
q: is the person on the court?
a: No
q: is it a spectator?
a: Yes
q: is it a man?
a: Yes
q: is the man in a hat?
a: Yes
q: does the man have a red shirt?
a: Yes