[Q]: Extract the answer to the question from the following context. Question: What things didn't line up with the calendars? Context: Ancient tables provided the sun's mean longitude. Christopher Clavius, the architect of the Gregorian calendar, noted that the tables agreed neither on the time when the sun passed through the vernal equinox nor on the length of the mean tropical year. Tycho Brahe also noticed discrepancies. The Gregorian leap year rule (97 leap years in 400 years) was put forward by Petrus Pitatus of Verona in 1560. He noted that it is consistent with the tropical year of the Alfonsine tables and with the mean tropical year of Copernicus (De revolutionibus) and Reinhold (Prutenic tables). The three mean tropical years in Babylonian sexagesimals as the excess over 365 days (the way they would have been extracted from the tables of mean longitude) were 14,33,9,57 (Alphonsine), 14,33,11,12 (Copernicus) and 14,33,9,24 (Reinhold). All values are the same to two places (14:33) and this is also the mean length of the Gregorian year. Thus Pitatus' solution would have commended itself to the astronomers.
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[A]: discrepancies

[Q]: Extract the answer to the question from the following context. Question: What does the preference for sizzle sounds say? Context: A test given to new students by Stanford University Music Professor Jonathan Berger showed that student preference for MP3-quality music has risen each year. Berger said the students seem to prefer the 'sizzle' sounds that MP3s bring to music.
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[A]: preference for MP3-quality music has risen

[Q]: Extract the answer to the question from the following context. Question: What do some officials do with funds received from fellow nation states? Context: If the highest echelons of the governments also take advantage from corruption or embezzlement from the state's treasury, it is sometimes referred with the neologism kleptocracy. Members of the government can take advantage of the natural resources (e.g., diamonds and oil in a few prominent cases) or state-owned productive industries. A number of corrupt governments have enriched themselves via foreign aid, which is often spent on showy buildings and armaments.
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[A]: enriched themselves

[Q]: Extract the answer to the question from the following context. Question: What is the first acronym mentioned? Context: Larger SAMs may be deployed in fixed launchers, but can be towed/re-deployed at will. The SAMs launched by individuals are known in the United States as the Man-Portable Air Defence Systems (MANPADS). MANPADS of the former Soviet Union have been exported around the World, and can be found in use by many armed forces. Targets for non-ManPAD SAMs will usually be acquired by air-search radar, then tracked before/while a SAM is "locked-on" and then fired. Potential targets, if they are military aircraft, will be identified as friend or foe before being engaged. The developments in the latest and relatively cheap short-range missiles have begun to replace autocannons in this role.
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[A]:
SAMs