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

Guessing-game dialogue about one of the objects:
q: is it a person?
a: Yes
q: is this person a color gray phone?
a: No
q: a person that has a red phone?
a: No
q: person's reflection showing on the train?
a: Yes
q: is this a granny?
a: Yes