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

Guessing-game dialogue about one of the objects:
q: is it in front?
a: No
q: is it person?
a: Yes
q: is in backmost?
a: N/A
q: is in train?
a: No
q: is in steps?
a: No
q: is near the train?
a: Yes
q: is it in front?
a: No
q: is in light blue with white bag?
a: Yes
q: i 2nd from front?
a: Yes