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

Guessing-game dialogue about one of the objects:
q: Is it the train?
a: No
q: Is it part of the train?
a: No
q: Is it a person?
a: Yes
q: Is the person on the left side of window?
a: No
q: So it is the person on the right side of the window, standing up?
a: Yes