Objects in the image:
category: truck
category: truck
category: car
category: train

Guessing-game dialogue about one of the objects:
q: Is it on the sign?
a: No
q: Is it on the train?
a: No
q: Is it one of the cars?
a: No
q: Is it one of the flags?
a: No
q: Is it in the top half of the photo?
a: Yes
q: One of the trees?
a: No
q: One of the posts?
a: No
q: One of the power lines?
a: No
q: One of the clouds?
a: No
q: Is it green?
a: No
q: Is it black?
a: No
q: Is it blue?
a: No
q: Is it red?
a: Yes