Problem: Comcast:

Following a tentative agreement on by December 1, on December 3, 2009, the parties announced that Comcast would buy a controlling 51% stake in NBCUniversal for $6.5 billion in cash and $7.3 billion in programming. GE would take over the remaining 49% stake in NBCUniversal, using $5.8 billion to buy out Vivendi's 20% minority stake in NBCUniversal. On January 18, 2011, the FCC approved the deal by a vote of 4 to 1. The sale was completed on January 28, 2011. In late December 2012, Comcast added the NBC peacock symbol to their new logo. On February 12, 2013, Comcast announced an intention to acquire the remaining 49% of General Electric's interest in NBCUniversal, which Comcast completed on March 19, 2013.

On what date was the sale finally completed?
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A: January 28, 2011


Problem: Many Baptist churches choose to affiliate with organizational groups that provide fellowship without control. The largest such group is the Southern Baptist Convention. There also are a substantial number of smaller cooperative groups. Finally, there are Baptist churches that choose to remain autonomous and independent of any denomination, organization, or association. It has been suggested that a primary Baptist principle is that local Baptist Churches are independent and self-governing, and if so the term 'Baptist denomination' may be considered somewhat incongruous.
What term is not considered to be incongruous?
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Answer: unanswerable


Q: What is a question about this article? If the question is unanswerable, say "unanswerable".
"Near East" remained popular in diplomatic, trade and journalistic circles, but a variation soon developed among the scholars and the men of the cloth and their associates: "the Nearer East," reverting to the classical and then more scholarly distinction of "nearer" and "farther." They undoubtedly saw a need to separate the Biblical lands from the terrain of the Ottoman Empire. The Christians saw the country as the land of the Old and New Testaments, where Christianity had developed. The scholars in the field of studies that eventually became Biblical archaeology attempted to define it on the basis of archaeology.
What variation soon developed among the scholars and the men of the cloth and their associates?
A: "the Nearer East,"


Context and question: Modern electrification systems take AC energy from a power grid which is delivered to a locomotive and converted to a DC voltage to be used by traction motors. These motors may either be DC motors which directly use the DC or they may be 3-phase AC motors which require further conversion of the DC to 3-phase AC (using power electronics). Thus both systems are faced with the same task: converting and transporting high-voltage AC from the power grid to low-voltage DC in the locomotive. Where should this conversion take place and at what voltage and current (AC or DC) should the power flow to the locomotive? And how does all this relate to energy-efficiency? Both the transmission and conversion of electric energy involve losses: ohmic losses in wires and power electronics, magnetic field losses in transformers and smoothing reactors (inductors). Power conversion for a DC system takes place mainly in a railway substation where large, heavy, and more efficient hardware can be used as compared to an AC system where conversion takes place aboard the locomotive where space is limited and losses are significantly higher. Also, the energy used to blow air to cool transformers, power electronics (including rectifiers), and other conversion hardware must be accounted for.
What type of losses happen during conversion and transmission in wires and electronics?
Answer: ohmic losses


Question: A different format, CD-4 (not to be confused with compact disc), by RCA, encoded the front-rear difference information on an ultrasonic carrier, which required a special wideband cartridge to capture it on carefully calibrated pickup arm/turntable combinations. CD-4 was even less successful than the two matrixed formats. (A further problem was that no cutting heads were available that could handle the HF information. That was remedied by cutting at half the speed. Later, the special half-speed cutting heads and equalization techniques were employed to get a wider frequency response in stereo with reduced distortion and greater headroom.)
Is there an answer to this question: What were potential benefits of the CD-4 format?

Answer: reduced distortion and greater headroom


Question: 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.
Is there an answer to this question: Who was the architect of the Gregorian calendar?

Answer:
Christopher Clavius