Assertion: toilet bowl's water | /r/AtLocation | cistern
Facets:
Source sentences:
text: The notion of a flushable toilet was developed by the Elizabethan poet Sir John Harington, who designed an indoor water closet containing a toilet facility that could dilute sewage with water contained in a cistern.
text: When the toilet is flushed, this flapper is lifted off the water outlet and allowed to float in the water contained in the cistern.