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

Guessing-game dialogue about one of the objects:
q: is it a person?
a: Yes
q: is the person on the balcony?
a: No
q: is it the guy at the bottom of the stairs with the red bag?
a: No
q: is the person on the train?
a: Yes
q: Is it in the window at the end of the train facing us below the 5524 and Edgeware Road sign?
a: No
q: is the person in a window in one of the white panels?
a: Yes
q: far right window?
a: No
q: Is it the person on the left?
a: No
q: the next one to the left, on the other side of the two red doors?
a: No
q: next one back, in the white panel with the logo?
a: No
q: next one back?
a: No
q: it's getting to where there are no discernible shapes in the windows. to confirm, the person is in a window of one of the white sections of the train?
a: Yes
q: is it the main train in the picture?
a: No
q: Is it in the window of the white panel to the left of the guy at the bottom of the stairs with the red bag?
a: Yes