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

Guessing-game dialogue about one of the objects:
q: is it a person?
a: Yes
q: with a backpack on?
a: No
q: all the way in the back?
a: No
q: the older guy leaning a the wall?
a: Yes