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

Guessing-game dialogue about one of the objects:
q: is it person?
a: Yes
q: is he in front?
a: No
q: is he in right?
a: Yes
q: are 3 together in right?
a: Yes
q: is it rightmost one in black?
a: No
q: is it middle one?
a: Yes