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

Guessing-game dialogue about one of the objects:
q: Is it a person?
a: Yes
q: Is the person on the paved train platform?
a: No
q: Is the person in the background by the exit doors?
a: No
q: Is the person at the top of the escalators?
a: Yes
q: Is it the person in the short sleeved greenish/grey tee shirt immediately to our right of the restraining wall?
a: No
q: Is it the person next over in red?
a: Yes
q: Do you see more than one person at the top of the escalator in solid red?
a: No