Objects in the image:
category: tennis racket
category: clock
category: person
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: No
q: Is is on the court?
a: Yes
q: Is it the clock?
a: No
q: Is is on the left side of the picture?
a: Yes
q: Is it a logo?
a: No
q: Is it clothing?
a: No
q: is it sporting equipment?
a: Yes