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

Guessing-game dialogue about one of the objects:
q: is it a train?
a: No
q: is it a light?
a: No
q: is it a building?
a: No
q: does it have wires?
a: No
q: are the trains running on it?
a: No
q: is it the sun?
a: No
q: is it something in the train?
a: Yes
q: is it a person in the train?
a: Yes