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

Guessing-game dialogue about one of the objects:
q: is it train?
a: No
q: is it the building?
a: No
q: is it a yellow sign?
a: No
q: is it a railroad?
a: No
q: is it on the building?
a: No
q: is it green?
a: No
q: is it pole?
a: No
q: is it on the train?
a: Yes
q: is it white?
a: Yes