Does the sentence "Prior to the trial proceedings, EchoStar indicated that it intended to offer Wayback Machine snapshots as proof of the past content of Telewizja Polska's web site." provide a valid answer to the question "What does Telewizja Polska operate?"

A: no

Does the sentence "He examines each of the three terms in the Berkeleian aphorism esse est percipi, "to be is to be perceived", finding that it must mean that the object and the subject are necessarily connected so that "yellow" and "the sensation of yellow" are identical - "to be yellow" is "to be experienced as yellow"." provide a valid answer to the question "Who originated the saying 'esse est percipi'?"

A: no

Does the sentence "The resulting glass is thicker at the location of the pour, located at the center of the large sheet." provide a valid answer to the question "What were the areas at the center of an old sheet of glass called?"

A: no

Does the sentence "The topography of the city center was also changed by the construction of a seawall and the artificial Harbor Island (completed 1909) at the mouth of the city's industrial Duwamish Waterway, the terminus of the Green River." provide a valid answer to the question "What artificial geological feature was added to Seattle in 1909?"

A:
yes