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

Guessing-game dialogue about one of the objects:
q: is it a person?
a: No
q: Is it the racket?
a: No
q: Is it a bottle?
a: Yes
q: Is it one of the bottles by the white bench?
a: Yes
q: the water bottle?
a: Yes