Q: What is a question about this article? If the question is unanswerable, say "unanswerable".
Birds fly at varying altitudes during migration. An expedition to Mt. Everest found skeletons of northern pintail Anas acuta and black-tailed godwit Limosa limosa at 5,000 m (16,000 ft) on the Khumbu Glacier. Bar-headed geese Anser indicus have been recorded by GPS flying at up to 6,540 metres (21,460 ft) while crossing the Himalayas, at the same time engaging in the highest rates of climb to altitude for any bird. Anecdotal reports of them flying much higher have yet to be corroborated with any direct evidence. Seabirds fly low over water but gain altitude when crossing land, and the reverse pattern is seen in landbirds. However most bird migration is in the range of 150 to 600 m (490 to 1,970 ft). Bird strike aviation records from the United States show most collisions occur below 600 m (2,000 ft) and almost none above 1,800 m (5,900 ft).
What part of birds was found on an expedition to Mt. Everest?
A: skeletons

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After the Xinhai Revolution (191112) toppled the Qing dynasty and the last Qing troops were escorted out of Tibet, the new Republic of China apologized for the actions of the Qing and offered to restore the Dalai Lama's title. The Dalai Lama refused any Chinese title and declared himself ruler of an independent Tibet. In 1913, Tibet and Mongolia concluded a treaty of mutual recognition. For the next 36 years, the 13th Dalai Lama and the regents who succeeded him governed Tibet. During this time, Tibet fought Chinese warlords for control of the ethnically Tibetan areas in Xikang and Qinghai (parts of Kham and Amdo) along the upper reaches of the Yangtze River. In 1914 the Tibetan government signed the Simla Accord with Britain, ceding the South Tibet region to British India. The Chinese government denounced the agreement as illegal.
What did the Tibetan government sign in 1913?
A: unanswerable

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Another study on men and women's patterns of sexual arousal confirmed that men and women have different patterns of arousal, independent of their sexual orientations. The study found that women's genitals become aroused to both human and nonhuman stimuli from movies showing humans of both genders having sex (heterosexual and homosexual) and from videos showing non-human primates (bonobos) having sex. Men did not show any sexual arousal to non-human visual stimuli, their arousal patterns being in line with their specific sexual interest (women for heterosexual men and men for homosexual men).
What types of stimuli were found to arouse women?
A: both human and nonhuman stimuli

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More than 200 newspapers and 350 consumer magazines have an office in the city, and the publishing industry employs about 25,000 people. Two of the three national daily newspapers in the United States are New York papers: The Wall Street Journal and The New York Times, which has won the most Pulitzer Prizes for journalism. Major tabloid newspapers in the city include: The New York Daily News, which was founded in 1919 by Joseph Medill Patterson and The New York Post, founded in 1801 by Alexander Hamilton. The city also has a comprehensive ethnic press, with 270 newspapers and magazines published in more than 40 languages. El Diario La Prensa is New York's largest Spanish-language daily and the oldest in the nation. The New York Amsterdam News, published in Harlem, is a prominent African American newspaper. The Village Voice is the largest alternative newspaper.
How many magazines can call NYC home?
A:
350