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

Guessing-game dialogue about one of the objects:
q: is it a person?
a: No
q: is it train?
a: No
q: is it on the floor?
a: No
q: is it on the roof?
a: No
q: is it on the train?
a: No
q: is it on the right half?
a: No
q: is it on the left half?
a: Yes
q: is it on the left upper half?
a: N/A
q: is it near the floor?
a: Yes