Objects in the image:
category: person
category: person
category: person
category: person
category: person
category: person
category: person
category: chair
category: person
category: backpack
category: person
category: person
category: chair
category: person
category: person

Guessing-game dialogue about one of the objects:
q: is a person?
a: Yes
q: in the crowd?
a: No
q: playing tennis?
a: No
q: in a chair?
a: No
q: wearing black?
a: Yes
q: bent over?
a: Yes
q: behind the red player?
a: Yes