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

Guessing-game dialogue about one of the objects:
q: Is it a person?
a: Yes
q: Are they in the train?
a: N/A
q: Are they on the right sidewalk?
a: No
q: Can you see them through the glass of the train?
a: Yes