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

Guessing-game dialogue about one of the objects:
q: the light in the front?
a: No
q: left half of the picture?
a: N/A
q: is it in the top half of the picture?
a: N/A
q: is it part of the train?
a: No
q: is it a man on the train?
a: No
q: it is a person?
a: No
q: is it that green thing that seemed to obvious?
a: Yes