Objects in the image:
category: person
category: person
category: person
category: traffic light
category: person
category: bus
category: tie
category: bus
category: traffic light
category: bus

Guessing-game dialogue about one of the objects:
q: bus .?
a: Yes
q: one in front?
a: No
q: middle .?
a: No
q: one behind?
a: Yes