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

Guessing-game dialogue about one of the objects:
q: Is it a person?
a: Yes
q: Are they on the bus?
a: Yes
q: Are they wearing green?
a: No
q: Are they at the back of the line?
a: Yes
q: At the very back of the line?
a: No
q: Is it the man standing beneath the R in 'Railway'?
a: Yes