Objects in the image:
category: person
category: traffic light
category: person
category: person
category: person
category: person
category: person
category: person
category: person
category: train

Guessing-game dialogue about one of the objects:
q: is it a person?
a: Yes
q: are they on the train?
a: No
q: is it the man in blue standing by the train?
a: No
q: is it the person in red on the left hand side?
a: Yes