Objects in the image:
category: train
category: backpack
category: person
category: person
category: bottle

Guessing-game dialogue about one of the objects:
q: is it the human?
a: No
q: the train?
a: No
q: is it ON the human?
a: Yes
q: is it his shoes?
a: No
q: his pants?
a: No
q: his sweater?
a: No
q: Is it his backpack?
a: Yes