Problem: Sichuan:

Qin armies finished their conquest of the kingdoms of Shu and Ba by 316 BC. Any written records and civil achievements of earlier kingdoms were destroyed. Qin administrators introduced improved agricultural technology. Li Bing, engineered the Dujiangyan irrigation system to control the Min River, a major tributary of the Yangtze. This innovative hydraulic system was composed of movable weirs which could be adjusted for high or low water flow according to the season, to either provide irrigation or prevent floods. The increased agricultural output and taxes made the area a source of provisions and men for Qin's unification of China.

The Min River is a major tributary of what river?
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A: Yangtze

Problem: On February 14, 2009, The Walt Disney Company debuted "The American Idol Experience" at its Disney's Hollywood Studios theme park at the Walt Disney World Resort in Florida. In this live production, co-produced by 19 Entertainment, park guests chose from a list of songs and auditioned privately for Disney cast members. Those selected then performed on a stage in a 1000-seat theater replicating the Idol set. Three judges, whose mannerisms and style mimicked those of the real Idol judges, critiqued the performances. Audience members then voted for their favorite performer. There were several preliminary-round shows during the day that culminated in a "finals" show in the evening where one of the winners of the previous rounds that day was selected as the overall winner. The winner of the finals show received a "Dream Ticket" that granted them front-of-the-line privileges at any future American Idol audition. The attraction closed on August 30, 2014.
What company had a partnership with The Walt Disney Company for The American Idol Experience?
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Answer: 19 Entertainment

Q: What is a question about this article? If the question is unanswerable, say "unanswerable".
An error sometimes made is the confusion of discussion regarding Greece's Eurozone entry with the controversy regarding usage of derivatives' deals with U.S. Banks by Greece and other Eurozone countries to artificially reduce their reported budget deficits. A currency swap arranged with Goldman Sachs allowed Greece to "hide" 2.8 billion Euros of debt, however, this affected deficit values after 2001 (when Greece had already been admitted into the Eurozone) and is not related to Greece's Eurozone entry.
What error is never made?
A: unanswerable

Context and question: The album also featured the hit single "Bohemian Rhapsody", which was number one in the UK for nine weeks. Mercury's close friend and advisor, Capital London radio DJ Kenny Everett, played a pivotal role in giving the single exposure. It is the third-best-selling single of all time in the UK, surpassed only by Band Aid's "Do They Know It's Christmas?" and Elton John's "Candle in the Wind 1997", and is the best-selling commercial single in the UK. It also reached number nine in the United States (a 1992 re-release reached number two on the Billboard Hot 100 for five weeks). It is the only single ever to sell a million copies on two separate occasions, and became the Christmas number one twice in the UK, the only single ever to do so. "Bohemian Rhapsody" has been voted numerous times the greatest song of all time. The band decided to make a video to help go with the single and hired Trilion, a subsidiary of the former management company Trident Studios, using new technology to create the video; the result is generally considered to have been the first "true" music video ever produced, and popularised the medium. The album's first track "Death on Two Legs" is said to be written by Mercury about Norman Sheffield and the former management at Trident who helped make the video so popular. Although other bands, including the Beatles, had made short promotional films or videos of songs prior to this, generally, those were specifically made to be aired on specific television shows. On the impact of "Bohemian Rhapsody", Rolling Stone states: "Its influence cannot be overstated, practically inventing the music video seven years before MTV went on the air." The second single from the album, "You're My Best Friend", the second song composed by John Deacon, and his first single, peaked at number sixteen in the United States and went on to become a worldwide Top Ten hit. The band's A Night at the Opera Tour began in November 1975, and covered Europe, the United States, Japan, and Australia.
What Queen single sold a million copies on two separate occasions?
Answer: Bohemian Rhapsody

Question: The U.S. Food and Drug Administration (FDA) has stated that zinc damages nerve receptors in the nose, which can cause anosmia. Reports of anosmia were also observed in the 1930s when zinc preparations were used in a failed attempt to prevent polio infections. On June 16, 2009, the FDA said that consumers should stop using zinc-based intranasal cold products and ordered their removal from store shelves. The FDA said the loss of smell can be life-threatening because people with impaired smell cannot detect leaking gas or smoke and cannot tell if food has spoiled before they eat it. Recent research suggests that the topical antimicrobial zinc pyrithione is a potent heat shock response inducer that may impair genomic integrity with induction of PARP-dependent energy crisis in cultured human keratinocytes and melanocytes.
Is there an answer to this question: Why was zinc being used in the 1930's?

Answer: polio infections

QUES: Paris' urbanism laws have been under strict control since the early 17th century, particularly where street-front alignment, building height and building distribution is concerned. In recent developments, a 1974-2010 building height limitation of 37 metres (121 ft) was raised to 50 m (160 ft) in central areas and 180 metres (590 ft) in some of Paris' peripheral quarters, yet for some of the city's more central quarters, even older building-height laws still remain in effect. The 210 metres (690 ft) Montparnasse tower was both Paris and France's tallest building until 1973, but this record has been held by the La Defense quarter Tour First tower in Courbevoie since its 2011 construction. A new project for La Defense, called Hermitage Plaza, launched in 2009, proposes to build two towers, 85 and 86 stories or 320 metres high, which would be the tallest buildings in the European Union, just slightly shorter than the Eiffel Tower. They were scheduled for completion in 2019 or 2020, but as of January 2015 construction had not yet begun, and there were questions in the press about the future of the project.

Until 1973, what was Paris; tallest building?
What is the answer?
ANS:
Montparnasse