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

Guessing-game dialogue about one of the objects:
q: Is it in the foreground?
a: No
q: Is it human?
a: Yes
q: Is it the black guy on the court?
a: Yes