Objects in the image:
category: person
category: book
category: bench
category: backpack

Guessing-game dialogue about one of the objects:
q: is it a person?
a: No
q: is it the bench?
a: No
q: is it green?
a: No
q: is it blue/purple?
a: No
q: is it a rock?
a: No
q: is it in the top half of the photo?
a: No
q: is it the book the person has in their lap?
a: Yes