Objects in the image:
category: person
category: train
category: person
category: person
category: person
category: person
category: person
category: person
category: person
category: person
category: person
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 train?
a: No
q: Is the person wearing red?
a: No
q: Is the person partly covered by another person/object?
a: No
q: Is it the blond lady who is most visible?
a: No
q: Is it the elderly person who is touching the train?
a: No
q: Is it the person, in blue, between them?
a: Yes
q: The entire person wearing all blue and holding a bag?
a: Yes