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

Guessing-game dialogue about one of the objects:
q: is it a train?
a: No
q: is it a person?
a: Yes
q: is this person on the train?
a: Yes
q: it it wearing red?
a: No
q: is it wearing blue?
a: Yes