Objects in the image:
category: train
category: boat
category: boat
category: train

Guessing-game dialogue about one of the objects:
q: is it boat?
a: No
q: is it on the bridge?
a: Yes
q: the green thing?
a: N/A
q: the red thing left most of bridge?
a: No
q: the greenish and black thing to right?
a: Yes