This task is about creating an unanswerable question based on a given passage. Construct a question that looks relevant to the given context but is unanswerable. Following are a few suggestions about how to create unanswerable questions:
(i) create questions which require satisfying a constraint that is not mentioned in the passage
(ii) create questions which require information beyond what is provided in the passage in order to answer
(iii) replace an existing entity, number, date mentioned in the passage with other entity, number, date and use it in the question
(iv) create a question which is answerable from the passage and then replace one or two words by their antonyms or insert/remove negation words to make it unanswerable.

Q: Passage: The noise-based speed is defined as the exposure that will lead to a given signal-to-noise ratio on individual pixels. Two ratios are used, the 40:1 ("excellent image quality") and the 10:1 ("acceptable image quality") ratio. These ratios have been subjectively determined based on a resolution of 70 pixels per cm (178 DPI) when viewed at 25 cm (9.8 inch) distance. The signal-to-noise ratio is defined as the standard deviation of a weighted average of the luminance and color of individual pixels. The noise-based speed is mostly determined by the properties of the sensor and somewhat affected by the noise in the electronic gain and AD converter.

A: Which ratio was subjectively determined?
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Q: Passage: Since World War II, aircraft carrier designs have increased in size to accommodate a steady increase in aircraft size. The large, modern Nimitz class of US carriers has a displacement nearly four times that of the World War II–era USS Enterprise, yet its complement of aircraft is roughly the same—a consequence of the steadily increasing size and weight of military aircraft over the years. Today's aircraft carriers are so expensive that nations which operate them risk significant political, economic, and military impact if a carrier is lost, or even used in conflict.

A: Why have aircraft carriers increased in size since World War I?
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Q: Passage: These critics of the modern separation of church and state also note the official establishment of religion in several of the states at the time of ratification, to suggest that the modern incorporation of the Establishment Clause as to state governments goes against the original constitutional intent.[citation needed] The issue is complex, however, as the incorporation ultimately bases on the passage of the 14th Amendment in 1868, at which point the first amendment's application to the state government was recognized. Many of these constitutional debates relate to the competing interpretive theories of originalism versus modern, progressivist theories such as the doctrine of the Living Constitution. Other debates center on the principle of the law of the land in America being defined not just by the Constitution's Supremacy Clause, but also by legal precedence, making an accurate reading of the Constitution subject to the mores and values of a given era, and rendering the concept of historical revisionism irrelevant when discussing the Constitution.

A:
Critics of modern separation of church and state note there was unofficial establishment of what in several states at the time of ratification?
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