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

Guessing-game dialogue about one of the objects:
q: Is it a person?
a: No
q: is it on the left half of the picture?
a: Yes
q: is it the train?
a: No
q: is it an item being worn or held by someone?
a: Yes
q: is it a backpack?
a: Yes
q: is it on the person in the navy coat?
a: Yes