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

Guessing-game dialogue about one of the objects:
q: is it the train?
a: No
q: is it made of metal?
a: No
q: is it a person?
a: Yes
q: is the person in front of the green train?
a: No
q: is the person in front of the purple train?
a: Yes
q: is the person male?
a: Yes
q: is he wearing a black suit?
a: Yes
q: is it near the left side?
a: Yes
q: is he the tallest?
a: Yes