Input: Read this: Inspection service is designed to provide access to the hoistway and car top for inspection and maintenance purposes by qualified elevator mechanics. It is first activated by a key switch on the car operating panel usually labeled 'Inspection', 'Car Top', 'Access Enable' or 'HWENAB'. When this switch is activated the elevator will come to a stop if moving, car calls will be canceled (and the buttons disabled), and hall calls will be assigned to other elevator cars in the group (or canceled in a single elevator configuration). The elevator can now only be moved by the corresponding 'Access' key switches, usually located at the highest (to access the top of the car) and lowest (to access the elevator pit) landings. The access key switches will allow the car to move at reduced inspection speed with the hoistway door open. This speed can range from anywhere up to 60% of normal operating speed on most controllers, and is usually defined by local safety codes.
Question: Who is authorized to provide inspection and/or maintenance of the elevator?

Output: qualified elevator mechanics


QUES: A strong and prominent a cappella tradition was begun in the midwest part of the United States in 1911 by F. Melius Christiansen, a music faculty member at St. Olaf College in Northfield, Minnesota. The St. Olaf College Choir was established as an outgrowth of the local St. John's Lutheran Church, where Christiansen was organist and the choir was composed, at least partially, of students from the nearby St. Olaf campus. The success of the ensemble was emulated by other regional conductors, and a rich tradition of a cappella choral music was born in the region at colleges like Concordia College (Moorhead, Minnesota), Augustana College (Rock Island, Illinois), Wartburg College (Waverly, Iowa), Luther College (Decorah, Iowa), Gustavus Adolphus College (St. Peter, Minnesota), Augustana College (Sioux Falls, South Dakota), and Augsburg College (Minneapolis, Minnesota). The choirs typically range from 40 to 80 singers and are recognized for their efforts to perfect blend, intonation, phrasing and pitch in a large choral setting.

What do a capella choirs struggle to perfect in a large choral setting?
What is the answer?
ANS: unanswerable


QUES: Greenware ceramics made from celadon had been made in the area since the 3rd-century Jin dynasty, but it returned to prominence—particularly in Longquan—during the Southern Song and Yuan. Longquan greenware is characterized by a thick unctuous glaze of a particular bluish-green tint over an otherwise undecorated light-grey porcellaneous body that is delicately potted. Yuan Longquan celadons feature a thinner, greener glaze on increasingly large vessels with decoration and shapes derived from Middle Eastern ceramic and metalwares. These were produced in large quantities for the Chinese export trade to Southeast Asia, the Middle East, and (during the Ming) Europe. By the Ming, however, production was notably deficient in quality. It is in this period that the Longquan kilns declined, to be eventually replaced in popularity and ceramic production by the kilns of Jingdezhen in Jiangxi.
What were greenware ceramics made from?

ANS: celadon


Most ingested uranium is excreted during digestion. Only 0.5% is absorbed when insoluble forms of uranium, such as its oxide, are ingested, whereas absorption of the more soluble uranyl ion can be up to 5%. However, soluble uranium compounds tend to quickly pass through the body, whereas insoluble uranium compounds, especially when inhaled by way of dust into the lungs, pose a more serious exposure hazard. After entering the bloodstream, the absorbed uranium tends to bioaccumulate and stay for many years in bone tissue because of uranium's affinity for phosphates. Uranium is not absorbed through the skin, and alpha particles released by uranium cannot penetrate the skin.
If it is possible to answer this question, answer it for me (else, reply "unanswerable"): Where doesn't uranium accumulate in the body?
Ah, so.. unanswerable


Question: Three and a quarter years after the end of the fifth series, a new sixth series was confirmed by Bandai for the Digimon anime, its official name of the series revealed in the June issue of Shueisha's V Jump magazine being Digimon Xros Wars. It began airing in Japan on TV Asahi from July 6, 2010 onwards. Reverting to the design style of the first four series as well as the plot taking on the younger, lighter tone present in series one, two and four throughout the story. The story follows a boy named Mikey Kudō (Taiki Kudo in Japan) who, along with his friends, ends up in the Digital World where they meet Shoutmon and his Digimon friends. Wielding a digivice known as a Fusion Loader (Xros Loader in Japan), Mikey is able to combine multiple Digimon onto one to enhance his power, Shoutmon being the usual core of the combination, using a technique known as 'DigiFuse' (Digi-Xros in Japan). Forming Team Fusion Fighters (Team Xros Heart in Japan), Mikey, Shoutmon and their friends travel through the Digital World to liberate it from the evil Bagra Army, led by Bagramon(Lord Bagra in English), and Midnight, a shady group led by AxeKnightmon with Nene as a figurehead before joining the Fusion Fighters. The Fusion Fighters also finds themselves at odds with Blue Flare, led by Christopher Aonuma (Kiriha Anouma in Japan). The second arc of Xros Wars was subtitled The Evil Death Generals and the Seven Kingdoms. It saw the main cast reshuffled with a new wardrobe while Angie (Akari in Japan) and Jeremy (Zenjiro in Japan) stay behind in the Human World; thus making Mikey, Christopher and Nene the lead protagonists as they set off to face the Seven Death Generals of the Bagra Army and AxeKnightmon's new pawn: Nene's brother Ewan (Yuu in Japan). A new evolution known as Super Digivolution was introduced at the end of the first arc. The English dub of the series began airing on Nickelodeon on September 7, 2013, which is produced by Saban Brands.
Try to answer this question if possible: Who did the Fusion fighters find themselves in battle with?
Answer: Blue Flare


Problem: At the end of November, Chopin returned to Paris. He passed the winter in unremitting illness, but gave occasional lessons and was visited by friends, including Delacroix and Franchomme. Occasionally he played, or accompanied the singing of Delfina Potocka, for his friends. During the summer of 1849, his friends found him an apartment in Chaillot, out of the centre of the city, for which the rent was secretly subsidised by an admirer, Princess Obreskoff. Here in June 1849 he was visited by Jenny Lind.
Chopin accompanied which singer for friends?
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Answer:
Delfina Potocka