Objects in the image:
category: truck
category: truck
category: truck
category: truck
category: truck
category: truck
category: truck
category: truck
category: truck

Guessing-game dialogue about one of the objects:
q: is it a train?
a: No
q: vehicle on the train?
a: Yes
q: is it green?
a: Yes
q: is it in the very back?
a: No
q: is it first green?
a: No
q: second one?
a: No
q: third one ?
a: No
q: 4th one?
a: Yes
q: is it the green one near the stairs?
a: No
q: is it the one under the 3 windows?
a: Yes