Objects in the image:
category: bus
category: boat
category: bus
category: boat
category: boat
category: boat

Guessing-game dialogue about one of the objects:
q: is it a boat?
a: No
q: is it a building?
a: No
q: it is the water?
a: No
q: Is it part of the bridge?
a: No
q: is it a person?
a: No
q: is it the rocky shore?
a: No
q: is it part of one of the buildings?
a: No
q: is it part of one of the boats?
a: No
q: is it in the bottom half of the picture?
a: Yes
q: is it below the white boat in the center?
a: No
q: is it above the withe boat in the center?
a: Yes
q: is it the road in front of the buildings?
a: No