[Q]: Extract the answer to the question from the following context. Question: What rather underhanded thing happened to Bell? Context: The question of priority for the variable resistance feature of the telephone was raised by the examiner before he approved Bell's patent application. He told Bell that his claim for the variable resistance feature was also described in Gray's caveat. Bell pointed to a variable resistance device in Bell's previous application in which Bell described a cup of mercury, not water. Bell had filed the mercury application at the patent office a year earlier on February 25, 1875, long before Elisha Gray described the water device. In addition, Gray abandoned his caveat, and because he did not contest Bell's priority, the examiner approved Bell's patent on March 3, 1876. Gray had reinvented the variable resistance telephone, but Bell was the first to write down the idea and the first to test it in a telephone.
****
[A]: his claim for the variable resistance feature was also described in Gray's caveat

[Q]: Extract the answer to the question from the following context. Question: How is YouTube Red different from the regular streaming service? Context: YouTube Red is YouTube's premium subscription service. It offers advertising-free streaming, access to exclusive content, background and offline video playback on mobile devices, and access to the Google Play Music "All Access" service. YouTube Red was originally announced on November 12, 2014, as "Music Key", a subscription music streaming service, and was intended to integrate with and replace the existing Google Play Music "All Access" service. On October 28, 2015, the service was re-launched as YouTube Red, offering ad-free streaming of all videos, as well as access to exclusive original content.
****
[A]: premium

[Q]: Extract the answer to the question from the following context. Question: What prevents accumulation? Context: Temperatures below 0 C (32 F) or above 25 C (77 F) are rare. Cork Airport records an average of 1,227.9 millimetres (4.029 ft) of precipitation annually, most of which is rain. The airport records an average of 7 days of hail and 11 days of snow or sleet a year; though it only records lying snow for 2 days of the year. The low altitude of the city, and moderating influences of the harbour, mean that lying snow very rarely occurs in the city itself. There are on average 204 "rainy" days a year (over 0.2 millimetres (0.0079 in) of rainfall), of which there are 73 days with "heavy rain" (over 5 millimetres (0.20 in)). Cork is also a generally foggy city, with an average of 97 days of fog a year, most common during mornings and during winter. Despite this, however, Cork is also one of Ireland's sunniest cities, with an average of 3.9 hours of sunshine every day and only having 67 days where there is no "recordable sunshine", mostly during and around winter.
****
[A]: low altitude of the city

[Q]: Extract the answer to the question from the following context. Question: Where was Virgil when he got sick? Context: According to the tradition, Virgil traveled to Greece in about 19 BC to revise the Aeneid. After meeting Augustus in Athens and deciding to return home, Virgil caught a fever while visiting a town near Megara. After crossing to Italy by ship, weakened with disease, Virgil died in Brundisium harbor on September 21, 19 BC. Augustus ordered Virgil's literary executors, Lucius Varius Rufus and Plotius Tucca, to disregard Virgil's own wish that the poem be burned, instead ordering it published with as few editorial changes as possible. As a result, the text of the Aeneid that exists may contain faults which Virgil was planning to correct before publication. However, the only obvious imperfections are a few lines of verse that are metrically unfinished (i.e. not a complete line of dactylic hexameter). Some scholars have argued that Virgil deliberately left these metrically incomplete lines for dramatic effect. Other alleged imperfections are subject to scholarly debate.
****
[A]:
visiting a town near Megara