Objects in the image:
category: toilet
category: sink
category: bottle

Guessing-game dialogue about one of the objects:
q: is it a towel?
a: No
q: is it near the sink?
a: No
q: is it the tub?
a: No
q: is it the shower?
a: No
q: is it the light?
a: No
q: is it the mirror?
a: No
q: is it the toilet paper?
a: No
q: is it the light switch?
a: No
q: is it on the wall?
a: No
q: is it on the ground?
a: Yes
q: is it the floor?
a: No
q: is it the sink?
a: No
q: As there is nothing on the ground that I have not covered, is it a wall?
a: No
q: is it the toilet?
a: Yes