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

Guessing-game dialogue about one of the objects:
q: is it a person?
a: No
q: is it a bag?
a: No
q: is it a towel?
a: No
q: is it something on a person?
a: Yes
q: is it a piece of clothing?
a: No
q: is it on the person wearing the black shirt sitting down?
a: No
q: The person standing with the hat on backwards?
a: Yes
q: is it the tennis racket?
a: Yes