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

Guessing-game dialogue about one of the objects:
q: is it in the audience?
a: No
q: is it a person?
a: Yes
q: are they standing?
a: Yes
q: are they wearing red?
a: Yes