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

Guessing-game dialogue about one of the objects:
q: is train?
a: No
q: is person?
a: Yes
q: 1st from left?
a: No
q: 2nd from left?
a: No
q: 3rd from left?
a: No
q: so its right most person?
a: Yes