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

Guessing-game dialogue about one of the objects:
q: is it human?
a: No
q: is it a tennis ball?
a: No
q: is it  a racquet?
a: No
q: is it in the background?
a: Yes
q: is it a chair?
a: Yes
q: is it an empty chair in the front row between a woman and a man?
a: No
q: is it a person?
a: No
q: is it a racket?
a: No
q: is it the yellow ball?
a: No
q: is it a newspaper?
a: No
q: is it a blue badge strand?
a: No
q: is a person wearing it?
a: No
q: is it a  flower bunch?
a: No
q: is it a  green bench?
a: Yes
q: the one in front where the lady and man are sitting?
a: No
q: the one behind it?
a: Yes
q: where 2 men are seated and their face is not visible?
a: Yes