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

Guessing-game dialogue about one of the objects:
q: person ??
a: No
q: train ??
a: No
q: building ??
a: No
q: train cart ??
a: No
q: left side of the train?
a: Yes
q: flowers under window?
a: No
q: sign on roof?
a: No
q: something near the building at the back?
a: No
q: man hole??
a: No
q: back pack?
a: Yes