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

Guessing-game dialogue about one of the objects:
q: is it a person?
a: Yes
q: is it the person sitting on the bench?
a: No
q: Is it one of the segway riders?
a: Yes
q: is it the one farthest in the back?
a: Yes