To continue evacuating a chamber indefinitely without requiring infinite growth, a compartment of the vacuum can be repeatedly closed off, exhausted, and expanded again. This is the principle behind positive displacement pumps, like the manual water pump for example. Inside the pump, a mechanism expands a small sealed cavity to create a vacuum. Because of the pressure differential, some fluid from the chamber (or the well, in our example) is pushed into the pump's small cavity. The pump's cavity is then sealed from the chamber, opened to the atmosphere, and squeezed back to a minute size.
If it is possible to answer this question, answer it for me (else, reply "unanswerable"): Repeatedly closing off a compartment of a vacuum allows what?
Ah, so.. continue evacuating a chamber indefinitely without requiring infinite growth

Changes this season include only airing one episode a week during the final ten. Coca Cola ended their longtime sponsorship of the show and Ford Motor Company maintained a reduced role. The winner of the season also received a recording contract with Big Machine Records.
If it is possible to answer this question, answer it for me (else, reply "unanswerable"): Who ended their sponsorship this season?
Ah, so.. Coca Cola

The endonym is pronounced /kə.təˈɫa/ in the Eastern Catalan dialects, and /ka.taˈɫa/ in the Western dialects. In the Valencian Community, the term valencià (/va.len.siˈa/) is frequently used instead. The names "Catalan" and "Valencian" are two names for the same language. See also status of Valencian below.
If it is possible to answer this question, answer it for me (else, reply "unanswerable"): What are Catalan and Valencian the names for?
Ah, so..
the same language