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

Guessing-game dialogue about one of the objects:
q: is it a person?
a: Yes
q: is it the man in the suit?
a: No
q: is it the guy in the green bag?
a: No
q: is it the guy in the white shirt and hat?
a: No
q: is it the person at the end of the platform?
a: Yes