Input: Read this: Biodiversity provides critical support for drug discovery and the availability of medicinal resources. A significant proportion of drugs are derived, directly or indirectly, from biological sources: at least 50% of the pharmaceutical compounds on the US market are derived from plants, animals, and micro-organisms, while about 80% of the world population depends on medicines from nature (used in either modern or traditional medical practice) for primary healthcare. Only a tiny fraction of wild species has been investigated for medical potential. Biodiversity has been critical to advances throughout the field of bionics. Evidence from market analysis and biodiversity science indicates that the decline in output from the pharmaceutical sector since the mid-1980s can be attributed to a move away from natural product exploration ("bioprospecting") in favor of genomics and synthetic chemistry, indeed claims about the value of undiscovered pharmaceuticals may not provide enough incentive for companies in free markets to search for them because of the high cost of development; meanwhile, natural products have a long history of supporting significant economic and health innovation. Marine ecosystems are particularly important, although inappropriate bioprospecting can increase biodiversity loss, as well as violating the laws of the communities and states from which the resources are taken.
Question: What ecosystems are particularly natural?

Output: unanswerable

QUES: In the 1960 election to choose his successor, Eisenhower endorsed his own Vice President, Republican Richard Nixon against Democrat John F. Kennedy. He told friends, "I will do almost anything to avoid turning my chair and country over to Kennedy." He actively campaigned for Nixon in the final days, although he may have done Nixon some harm. When asked by reporters at the end of a televised press conference to list one of Nixon's policy ideas he had adopted, Eisenhower joked, "If you give me a week, I might think of one. I don't remember." Kennedy's campaign used the quote in one of its campaign commercials. Nixon narrowly lost to Kennedy. Eisenhower, who was the oldest president in history at that time (then 70), was succeeded by the youngest elected president, as Kennedy was 43.

Who did Eisenhower endorse for president in 1960?
What is the answer?
ANS: Richard Nixon

QUES: In 2002 the Antarctic Peninsula's Larsen-B ice shelf collapsed. Between 28 February and 8 March 2008, about 570 km2 (220 sq mi) of ice from the Wilkins Ice Shelf on the southwest part of the peninsula collapsed, putting the remaining 15,000 km2 (5,800 sq mi) of the ice shelf at risk. The ice was being held back by a "thread" of ice about 6 km (4 mi) wide, prior to its collapse on 5 April 2009. According to NASA, the most widespread Antarctic surface melting of the past 30 years occurred in 2005, when an area of ice comparable in size to California briefly melted and refroze; this may have resulted from temperatures rising to as high as 5 C (41 F).
What remaining ice collapsed on 9 April 2005?

ANS: unanswerable

When Empress Dowager Deng died, Emperor An (r. 106125 AD) was convinced by the accusations of the eunuchs Li Run () and Jiang Jing () that Deng and her family had planned to depose him. An dismissed Deng's clan members from office, exiled them and forced many to commit suicide. After An's death, his wife, Empress Dowager Yan (d. 126 AD) placed the child Marquess of Beixiang on the throne in an attempt to retain power within her family. However, palace eunuch Sun Cheng (d. 132 AD) masterminded a successful overthrow of her regime to enthrone Emperor Shun of Han (r. 125144 AD). Yan was placed under house arrest, her relatives were either killed or exiled, and her eunuch allies were slaughtered. The regent Liang Ji (d. 159 AD), brother of Empress Liang Na (d. 150 AD), had the brother-in-law of Consort Deng Mengnu (later empress) (d. 165 AD) killed after Deng Mengnu resisted Liang Ji's attempts to control her. Afterward, Emperor Huan employed eunuchs to depose Liang Ji, who was then forced to commit suicide.
If it is possible to answer this question, answer it for me (else, reply "unanswerable"): Which person plotted to overthrew the regime of Empress Dowager Yan?
Ah, so.. Sun Cheng

Question: In addition to the Architects Registration Board, the RIBA provides accreditation to architecture schools in the UK under a course validation procedure. It also provides validation to international courses without input from the ARB.
Try to answer this question if possible: What other organization doesn't offer accreditation services for schools serving architects aside from the ARB?
Answer: unanswerable

Context and question: American Idol premiered in June 2002 and became the surprise summer hit show of 2002. The first show drew 9.9 million viewers, giving Fox the best viewing figure for the 8.30 pm spot in over a year. The audience steadily grew, and by finale night, the audience had averaged 23 million, with more than 40 million watching some part of that show. That episode was placed third amongst all age groups, but more importantly it led in the 1849 demographic, the age group most valued by advertisers.
When did American Idol premiere?
Answer:
June 2002