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

Guessing-game dialogue about one of the objects:
q: is it the train?
a: No
q: is it a person?
a: Yes
q: is it a person with a bike?
a: No
q: is it someone behind the people with bikes?
a: No
q: is it someone waiting for a train?
a: Yes
q: is it someone in the train?
a: No
q: is it the people far away in the picture?
a: No