A window-washer , dangling from a cord and carrying a white bucket , works on the windows of a red brick building which is labeled with the word `` BUILDING '' on a carved lintel .
It is likely that the window washer is climbing Mount Everest .
It is impossible that the window washer is climbing Mount Everest .
It is likely that the window washer is climbing Mount Everest .
The window washer is climbing Mount Everest .