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: No
q: is it a phone?
a: Yes
q: is it the red one the guy in the suit jacket is holding?
a: No
q: is it the one the man next to him is holding?
a: Yes